Just another day Kana brought another invention to the school. Kana's inventions were always a source of excitement at school. Her latest creation, a peculiar-looking collar, was today inside her school bag.

  Kana couldn't contain her excitement as she entered the school gates that morning. The anticipation of unveiling her latest invention to her classmates filled her with a sense of nervous energy. She knew that her inventions were always met with a mix of awe and curiosity, and today would be no different.

  As she made her way to the classroom, Kana couldn't help but wonder how her friends would react to the peculiar-looking collar she had crafted. It wasn't just any collar; it had a shimmering metallic surface with intricate engravings and tiny blinking lights. Kana had spent countless nights perfecting its design and functionality, and now it was ready for its grand debut.

  Kana carefully placed her school bag on her desk, making sure the collar was safely tucked away inside. She knew that the lunch break would be the perfect time to reveal her invention to her friends. The bell rang, signaling the start of another school day, and Kana eagerly awaited the moment when her classmates would discover the mysterious creation hidden in her bag. Little did she know that today's invention would take them on a thrilling adventure they would never forget.

  "Whoa! What is it?" asked Yumi, Kana's classmate, noticing the collar lying on the desk. Yumi's curiosity got the better of her as she approached Kana's desk, her eyes fixated on the peculiar collar. She couldn't resist reaching out to touch it, her fingers lightly brushing against the cool, metallic surface.

  Kana beamed with pride as she watched Yumi inspect her creation. "It's something special I've been working on," she replied, a mischievous twinkle in her eyes. "I call it the 'Neuro-Control Collar.' It's designed to control the wearer through the accompanying app from the phone.

  Yumi's eyes widened in astonishment as she listened to Kana's explanation. "Neuro-Control Collar?" she repeated, clearly intrigued. "That sounds incredibly futuristic! How does it work?"

  Kana couldn't contain her excitement as she began to explain. "Well, you see, it uses advanced technology to connect with the wearer's brainwaves. The collar has tiny sensors that can detect and alter brain signals, allowing the person wearing it to be controlled through the app.

  Yumi's fascination deepened as she absorbed Kana's explanation. "So, you mean if someone wears this collar and you have the app, you can control their actions?"

  Kana nodded enthusiastically. "Exactly! It's like having a direct link to someone's movements and actions. It has all sorts of potential applications, from assisting people with physical disabilities to enhancing remote control functions. But of course, it's just a prototype for now."

  "Can I take this one?" asked Yumi, leaning closer, "I have plans for such an invention," she giggled playfully.

  Kana chuckled at Yumi's enthusiasm. "I'd love to share it with you, Yumi, but I have to be cautious with this prototype. It's not quite ready for everyday use yet, and I want to make sure it's safe and reliable. However, I'd be happy to collaborate with you on your ideas and work on improving it together."

  Yumi nodded, understanding the importance of safety when dealing with such advanced technology. "That sounds like a great idea, Kana! We can brainstorm and make this invention even more amazing. Who knows what incredible things we can achieve?"

  As the two friends discussed their plans for the Neuro-Control Collar and its potential applications, the excitement in the classroom grew. Other classmates began to gather around, eager to learn more about Kana's creation and offer their own ideas. It was another day of innovation and creativity in the Japanese school, with Kana's invention at the center of it all, promising a future filled with endless possibilities.

  Later, in the evening, Yumi took out the collar from her school bag with a smile. She called her brother from another room, "Kenichi, can you come to me right now?"

  Yumi held the Neuro-Control Collar in her hand, excitement coursing through her veins as she anticipated testing it out with her brother. She had spent the afternoon studying the device and the accompanying app, making sure she understood its functions thoroughly.

  From another room, she heard her brother's voice calling out, "Sure, Yumi, I'm coming!" Kenichi's footsteps approached, and he entered the room, his curiosity piqued by the intriguing request.

  As he stood before Yumi, she couldn't help but feel a hint of nervousness. This was the moment of truth, the first time they would try out the collar's capabilities. With a determined expression, Yumi gently placed the collar around Kenichi's neck, making sure it was secure but not too tight.

  "What is it, Yumi?" asked Kenichi curiously, touching the collar with his hand.

  Yumi smiled at her brother, trying to contain her excitement. "Kenichi, this is the Neuro-Control Collar that Kana invented. It allows me to control your movements through the app on my phone," she explained, holding up her smartphone to show him.

  Kenichi's eyes widened in surprise and curiosity. "Really? That sounds like something out of science fiction. Are you sure it's safe?"

  Yumi nodded reassuringly. "Kana and I have tested it thoroughly, and we believe it's safe for short-term use. Plus, I promise I won't make you do anything crazy."

  Kenichi chuckled, still a bit skeptical but willing to give it a try. "Alright, Yumi, let's see what this collar can do."

  With her heart pounding, Yumi opened the app on her phone and carefully selected a simple command. She pressed the button, and to her amazement, Kenichi's right arm slowly lifted into the air as if it had a mind of its own.

  Kenichi's eyes widened in astonishment as he watched his own arm move without his control. "Whoa, this is incredible! It's like magic!"

  Yumi couldn't help but grin. "I told you it's amazing! Now, let's see what else we can do with it." The two siblings spent the evening experimenting with the Neuro-Control Collar, discovering its capabilities and laughing as they marveled at the possibilities. It was a night filled with wonder and excitement, and they couldn't wait to explore the endless potential of Kana's invention even further.

  As Yumi tapped the "Freeze" button on her smartphone's app, she watched in fascination as her brother, Kenichi, froze in place. It was as though time had come to a standstill for him. He remained motionless, his eyes wide with surprise.

  Yumi couldn't help but giggle at the sight. "Kenichi, can you hear me? You're frozen like a statue!"

  Kenichi, unable to move or speak, could only nod slightly to acknowledge that he could hear her.

  Yumi continued to experiment with the collar's features, trying different commands to see how they worked.

  Next, she tried the "Stop Thoughts" feature, which she had discovered earlier while studying the app. With a tap of her finger, she activated the "Stop Thoughts" command, and she watched as Kenichi's expression changed. His eyes, once wide with surprise, now seemed blank, as if his mind had gone completely still.

  "Wow, this is incredible," Yumi whispered to herself as she observed her brother's frozen state. It was as though she could pause his thoughts and actions at will, a power she had never imagined having.

  Yumi used the posing feature, applying the classical love doll pose to the Kenichi profile.

  Yumi couldn't resist having a bit of fun with the Neuro-Control Collar's posing feature. With a few taps on her smartphone, she activated the "Classical Love Doll Pose" command. Instantly, Kenichi's frozen form contorted into a graceful, doll-like pose, with the arms raised delicately and his legs wide apart at a perfect angle. It was as if he had transformed into a living love doll.

  Yumi couldn't help but burst into laughter at the sight of her brother in the classical love doll pose. It was a comical and unexpected transformation, and she marveled at the collar's versatility.

  "Kenichi, you make quite the charming love doll!" Yumi teased, still giggling.

  "Let me help you a bit", smiled Yumi, starting to remove Kenichi's clothes.

  As Kenichi remained frozen, Yumi carefully began to undress him. She removed his shirt and pants, and then his shoes and socks. With each item of clothing, she couldn't help but admire his body, and the power she had over him. When he was completely undressed, Yumi took a step back and surveyed her work. He looked like a perfect love doll, ready to be posed and displayed in her room.

  Yumi couldn't help but feel a sense of pride and accomplishment. With a smile, she tapped on the "Erect" button, sending the command to Kenichi's dick. Instantly, his penis began to harden, and Yumi laughed in delight.

  "Now you really do look like a love doll!" she said, unable to contain her amusement.

  With a mischievous smile, she adjusted his weight, allowing herself to carry him easily. She placed him in her room, positioning him in the perfect pose.

  Yumi couldn't believe how easy it had been to control Kenichi with the Neuro-Control Collar. She had been able to make him do whatever she wanted, and it had been an incredibly exhilarating experience.

  With a satisfied grin, Yumi looked at her living love doll and took a moment to appreciate the invention she had helped to create. She couldn't wait to see what other possibilities the Neuro-Control Collar could offer. Glancing at her frozen and naked brother's form, Yumi started to remove her own clothes slowly. She wanted to test her own brother like a true love doll, and the Neuro-Control Collar was the perfect tool to do so.

  Yumi continued to undress, her excitement growing with each item of clothing she removed. When she was completely naked, Yumi grasped her frozen and erect brother's penis with her hand, feeling its warmth and power. She felt a surge of power and pleasure as she controlled her brother in this way, and she couldn't help but smile in satisfaction.

  With a giggle, she pushed his brother onto her bed, and then straddled him, feeling her own pleasure intensifying as she did so. Yumi had never experienced anything like this before, and the thrill of controlling her brother was unlike anything she had ever felt before.

  Yumi continued to explore the possibilities of the Neuro-Control Collar, her excitement only growing with each passing moment. She felt a sense of power and control as she manipulated her brother, and the sensations were unlike anything she had ever experienced. It was an incredible feeling, and one she knew she would never forget.

  With a slow motion, she lowered her own pussy onto his dick, and then started to ride him like a true male love doll. She felt her body shaking with pleasure as she moved, and the sensations only intensified as she explored her own depths with her brother's body.

  Yumi felt like she was in control of her own pleasure, and she couldn't help but smile in satisfaction. She had never felt so powerful and in control before, and the experience was unlike anything she had ever experienced.

  She glanced at the blank brother's eyes with a smile, "Kenichi, I think you make an excellent love doll!" she teased, before continuing to ride him with a satisfied grin.

  Yumi couldn't believe how amazing the Neuro-Control Collar was. She had complete control over her brother, and she felt like a powerful goddess. She had never felt so powerful and in control before, and the experience was unlike anything she had ever experienced.

  She continued to ride her brother, exploring the depths of his body and pushing her own pleasure to its limits.

  Riding on him like a crazy, she reached her own climax in a matter of minutes, and then fell off of him, exhausted but satisfied.

  Yumi lay there for a few moments, catching her breath and savoring the moment. She had never felt so powerful and in control before, and she knew she would never forget this experience.

  Finally, Yumi tapped the "Release" button on her smartphone, and Kenichi's frozen form slowly returned to normal.

  "Ugh, what happened?" asked Kenichi curiously, finding himself posed naked on his sister's bed in a very provocative pose.

  Yumi couldn't help but burst into laughter as her brother, Kenichi, finally returned to his normal state. She quickly picked up a blanket and covered him, trying to stifle her amusement.

  "Kenichi, you won't believe what just happened," Yumi said, still chuckling. She proceeded to explain the use of the Neuro-Control Collar and how she had playfully posed him like a love doll.

  Kenichi's eyes widened in surprise and then turned slightly red with embarrassment. "I can't believe you did that! It was so strange being frozen like that. But at least I'm back to normal now."

  Yumi grinned mischievously. "Sorry for the surprise, Kenichi, but you have to admit, it was quite an experience. You were a pretty hot doll during our session."

  Kenichi couldn't help but shake his head in disbelief, a mixture of amusement and embarrassment on his face. "I never expected something like this to happen when you asked me to come here. You certainly know how to keep things interesting, Yumi."

  Yumi winked playfully at her brother. "Well, you know me, always up for a bit of fun and adventure."

  Kenichi chuckled and shook his head, realizing that his sister's sense of adventure and creativity could lead to unexpected situations. "That's true, Yumi. You definitely keep life interesting."

  As they shared a laugh and conversation, both siblings couldn't help but appreciate the incredible invention that Kana had created. The Neuro-Control Collar had brought a new level of excitement and playfulness to their lives, and they knew that there were still many more possibilities to explore with it.

  With a sense of anticipation, they began to discuss the future experiments and adventures they could have with the collar, eager to continue pushing the boundaries of what was possible.

  Later, during the night, as Kenichi was sleeping in his room, Yumi quietly sneaked in.

  "Oh, you are still wearing that collar," whispered Yumi, eyeing her brother sleeping peacefully.

  Smiling widely, Yumi took out her phone, scrolling through various options the app offered. Curiously, her glance stopped at the "Clay" set of options.

  As she tapped the "Clay" button, instantly Kenichi's body began to transform, his skin becoming soft and pliable like clay. Yumi couldn't help but admire her work. She had created a living sculpture, a living work of art that she could manipulate and shape as she pleased.

  Yumi spent the rest of the night exploring the possibilities of the Neuro-Control Collar, and the power it gave her to create her own living art.

  At first, she reached to his feet, carefully adjusting their shape with her hands. Yumi reduced Kenichi's feet slightly, creating a more dainty look with a thin and graceful shape.

  Next, she moved further, altering the shape of his ankles, making them more slender and attractive.

  Yumi was amazed by the power the Neuro-Control Collar gave her, and she continued to experiment with its capabilities.

  She adjusted the shape of his waist, as she reduced it significantly, creating a slender one with a flat girly tummy, and then moved to his hips, increasing their width slightly.

  Yumi continued to work her way up, slowly adjusting the shape of his body to create a more feminine look.

  She reached for his crotch, smiling mischievously. "You don't need this anymore," Yumi giggled, as she pressed his penis between her hands, making it disappear. She gently flattened his scrotum with her hand creating a smooth and perfectly flat crotch.

  As she was done with his genitals, Yumi moved to his chest. She used an extra clay, that remained from his waist and penis reshapement, and applied it here, creating a pair of small but perky breasts, that jiggled slightly as she was done. The breasts were smooth and featureless, without the nipples, just as his crotch.

  "You are beautiful, brother," giggled Yumi moving to his hands, making them smaller and more delicate.

  Finally, Yumi put her skillful hands on his face, making it more feminine, with a small delicate nose and cute lips.

  When Yumi was done, she couldn't help but admire her work. She had created a living doll, a perfect replica of herself, that she could control and manipulate at will.

  Yumi couldn't believe the power she had over her brother, and the possibilities that the Neuro-Control Collar opened up. She had never felt so powerful and in control before, and the experience was unlike anything she had ever experienced.

  "Kenichi, stand up," ordered Yumi with a smile.

  As Yumi issued the command, Kenichi obediently stood up from his bed. His body had been transformed according to her desires, and he now resembled a living sculpture, a perfect replica of her vision. He stood there, pliable and compliant, awaiting her next instruction.

  "Kenichi, take the classical pose of a store mannequin," Yumi ordered him.

  With a graceful and fluid motion, Kenichi moved into the classic pose of a store mannequin. His body stood frozen in a perfect, elegant pose, just like the mannequins that can be seen in a clothing store. Yumi couldn't help but admire her handiwork as her brother transformed into a living work of art.

  "Let's complete your look," noticed Yumi, as she scrolled through the options on her phone again.

  Yumi scrolled through the options on her phone, searching for the perfect finishing touches to complete Kenichi's transformed look. Her creative mind was in full gear, and she was determined to make her living art as stunning as possible.

  "Aha," giggled Yumi, tapping the "Mannequin transformation" sequence.

  As Yumi activated the "Mannequin transformation" sequence, Kenichi's body underwent a further change. His skin took on a smooth, glossy texture, resembling that of a store mannequin. His eyes, though open, had a glassy, vacant look to them, just like those of a mannequin.

  Yumi couldn't help but admire the lifelike appearance she had given her brother. He stood there, transformed into a perfect living mannequin, ready to be displayed as a piece of art.

  "Perfect," Yumi whispered to herself, her satisfaction evident in her smile. She had truly turned her brother into a work of art, a living mannequin that she could control and manipulate at will.

  She scrolled further, tapping the "Separation lines" option, completing Kenichi's mannequin form.

  "You make a great mannequin, Kenichi," Yumi watched, as her brother's limbs became detachable, as the locks formed inside his joints.

  "Kenichi, took another classical mannequin pose!" smiled Yumi.

  Kenichi, now transformed into a living mannequin, followed Yumi's command without hesitation. His body moved into another classical mannequin pose, his glossy, plastic-like skin reflecting the soft light in the room. He looked like a perfect store display, ready to showcase the latest fashion or products.

  Yumi couldn't help but admire her creation. Her brother had become a true work of art, a living mannequin that she could pose and manipulate at her whim. It was a surreal and incredible experience, and Yumi was thoroughly enjoying her newfound power and creativity.

  With a satisfied smile, she continued to experiment with the Neuro-Control Collar, eager to see what other transformations and poses she could create.

  As she got the big enough crate, she ordered with a smile, "Kenichi, disassemble yourself."

  Kenichi followed Yumi's command with meticulous precision. He disassembled his mannequin-like body, unclasping the locks in his body. Yumi, piece by piece, placed each of his limbs and body parts into the crate. It was a surreal sight, watching him transform into a collection of separate pieces, all neatly arranged in the container.

  Yumi couldn't help but feel a sense of awe at the level of control she had over her brother. He had truly become a living mannequin, completely under her command. With a satisfied smile, she sealed the crate, ready to store her living art until she was ready to assemble it once more.

  The possibilities with the Neuro-Control Collar seemed endless, and Yumi couldn't wait to explore them further in the days to come.

  The next evening, after the school, Yumi returned from the school with her friend Eiko.

  Yumi and Eiko returned from school, chatting and laughing as they walked through the front door of Yumi's house. It had been a long day of classes and studying, and they were both looking forward to relaxing and catching up.

  As they entered the living room, Eiko couldn't help but notice the large crate in the corner of the room. "Hey, Yumi, what's in that crate?" she asked curiously.

  Yumi grinned mischievously. "Oh, just something I've been working on. You'll see in a moment." With that, she walked over to the crate and began to carefully unpack its contents, revealing the disassembled pieces of her living mannequin, Kenichi.

  Eiko's eyes widened in surprise as she watched Yumi unpack the crate and reveal the disassembled pieces of Kenichi. She couldn't believe her eyes. "Yumi, is that mannequin? It's just shaped as your own body."

  Yumi nodded with a playful smile. "Yes, Eiko, it's not just any mannequin. It's actually my brother, Kenichi, transformed into a living mannequin using a special device. I can control and manipulate him as I please. It's quite the creation, isn't it?"

  Eiko was both astonished and intrigued by what she was witnessing. "Wow, Yumi, that's incredible! You and your inventions never cease to amaze me. Can you show me how it works?"

  Yumi nodded and began to reassemble Kenichi's body, piece by piece, explaining the process to Eiko as she went along. She carefully attached each limb and body part until Kenichi stood before them, once again transformed into a living mannequin.

  Yumi giggled, "Kenichi, you dumb mannequin. Say hello to my classmate."

  Kenichi, in his mannequin form, obeyed Yumi's command with a motionless yet playful expression. He turned his glassy, vacant eyes toward Eiko and made a small, comical wave with one of his posed hands, as if to say hello in his unique mannequin way. Yumi and Eiko burst into laughter at the amusing sight, enjoying their playful evening with Kenichi's living mannequin form.

  "Now, watch this," Yumi said, taking out her smartphone and activating the Neuro-Control Collar's app. She proceeded to pose and manipulate Kenichi, showcasing the device's capabilities to Eiko.

  Eiko watched in amazement as Kenichi, now in his mannequin form, moved and posed at Yumi's command. It was like something out of a sci-fi movie, and she couldn't help but be fascinated by the technology and creativity behind it.

  "This is unbelievable, Yumi! It's like you have your own living doll to play with," Eiko exclaimed.

  Yumi laughed, thoroughly enjoying her friend's reaction. "Exactly, Eiko! It's a fun and creative way to experiment with art and technology. Kenichi doesn't mind; he's a willing participant in our adventures."

  As the evening continued, Yumi and Eiko took turns posing and manipulating Kenichi, exploring the possibilities of the Neuro-Control Collar and reveling in the excitement of their unique creation. It was a night filled with laughter, creativity, and the boundless potential of their friendship and imagination.

  "Let's dress him in your swimsuit," giggled Eiko.

  Yumi and Eiko shared mischievous grins as they decided to have some more fun with Kenichi's mannequin form. With a playful gleam in their eyes, they went to Yumi's room and retrieved her swimsuit.

  "Kenichi, time for a new look," Yumi said, her voice filled with excitement. She carefully began to dress her mannequin-like brother in the swimsuit, making sure it fit perfectly on his transformed body.

  As they finished dressing him, Kenichi now stood there in a swimsuit, still in his mannequin pose. He looked like a store display model showcasing the latest swimwear collection.

  Eiko couldn't help but laugh at the sight. "Kenichi, you make quite the fashion model!"

  Yumi nodded in agreement. "Indeed, he does! Now, let's have some more fun with our living mannequin." The two friends continued to experiment with poses and outfits, enjoying the unique and creative experience they had with Kenichi.

  "Now watch this", with a mischievous giggle, Yumi tapped on the "Upload the personality" feature using the app on her phone. The app initiated the process, and a girly and playful personality began to upload into Kenichi's mind.

  As the personality upload progressed, Kenichi's expression changed. His glassy eyes took on a more animated and lively look, and a mischievous smile formed on his lips. He still stood in his mannequin pose, but there was a newfound playfulness to his demeanor.

  Kenichi, now imbued with the girly and playful personality of a swimsuit model, suddenly came to life in a different way. He began to move with a flirty, graceful charm, posing and gesturing in a manner that perfectly matched the persona Yumi had uploaded into him.

  "Hiii. I'm Kenichi, a fun and flirty swimsuit model!" Kenichi exclaimed in a playful and girly tone, twirling around in his swimsuit with a wink. His movements were fluid and filled with charisma, as if he had stepped straight off the runway of a swimwear fashion show.

  Eiko couldn't believe her eyes. "Yumi, this is incredible! It's like he's a completely different person now!"

  Yumi grinned, thoroughly enjoying the transformation. "That's the magic of the Neuro-Control Collar. I can upload different personalities and have fun with it. Kenichi, show Eiko some of your best model poses!"

  Kenichi, now fully embracing his girly swimsuit model persona, struck a series of sultry and playful poses, making Eiko and Yumi burst into laughter. It was a surreal and entertaining sight, and they couldn't help but admire the possibilities the Neuro-Control Collar offered for creative and playful experiences.

  "Kenichi, go take the sexy shower," laughed Eiko, adding the additional absurdity to their evening.

  Kenichi, still embracing his girly swimsuit model persona, didn't hesitate to play along with the absurdity of the situation. With a flirty giggle, he sauntered over to the bathroom inside their home, swaying his hips seductively as he went. It was as if he had stepped into a glamorous photoshoot, and he didn't miss a beat.

  Inside the bathroom, Kenichi turned on the shower, letting the water flow and steam fill the room. He positioned himself under the warm spray, letting the water cascade over his swimsuit-clad body, his poses and expressions growing even more playful and flirtatious.

  Eiko and Yumi couldn't help but laugh at the over-the-top performance. "Kenichi, you're a natural at this!" Eiko exclaimed, thoroughly entertained by the absurdity of the evening.

  Kenichi, fully committed to his role as a flirty swimsuit model, continued to playfully pose and dance under the shower's warm spray, making every movement seem like part of a glamorous photoshoot. He winked and blew kisses at Eiko and Yumi through the bathroom door, adding to the fun and absurdity of the moment.

  Yumi joined in the laughter, thoroughly enjoying the unexpected turn of events. "Who would have thought we'd have such a unique and entertaining evening? The Neuro-Control Collar sure knows how to bring out the creativity in all of us!"

  As the playful shower session continued, the three friends relished in the sheer silliness and fun of the moment, grateful for the unique experiences their friendship and Yumi's inventions brought into their lives.

  Yumi watched Kenichi shower with a playful grin. The situation had taken an unexpected and comical turn, and she couldn't help but enjoy the absurdity of it all. Kenichi, fully immersed in his role as a flirty swimsuit model, continued to put on a playful and entertaining show under the warm spray of the shower.

  "Hey, Kenichi, change your name to the Keiko," smiled Yumi.

  Kenichi, still in his flirty swimsuit model persona, flashed a charming smile and replied in a playful tone, "Of course, Yumi! From now on, I'm Keiko, your fabulous swimsuit model friend!" He continued to pose and dance under the shower, embodying his new identity with gusto.

  Yumi and Eiko couldn't contain their laughter at the unexpected twist. It was a night filled with laughter, creativity, and a healthy dose of absurdity, all thanks to the Neuro-Control Collar and their playful imaginations.

  "Sure, your brother is like a putty in our hands," smiled Eiko, "or she?"

  Eiko's playful comment made both her and Yumi burst into laughter. "Well, Keiko does seem to enjoy being our living mannequin and swimsuit model," Yumi replied with a grin. "It's all in good fun, and it just goes to show the endless possibilities this collar offers."

  Keiko, still under the shower and fully immersed in the playful role, struck a pose with a flirty wink, adding to the laughter in the room.

  As they continued to enjoy their absurd and entertaining evening, the friends couldn't help but appreciate the unique experiences and adventures that Yumi's inventions brought into their lives, even if they were a bit unconventional.

  "Hey, Keiko. Remove the memory of the previous yourself. I mean, forget about that you were a man and my brother," smiled Yumi.

  Keiko, still embodying the playful swimsuit model persona, nodded with a flirtatious smile. "Of course, Yumi, darling. I'm a blank canvas, ready to forget my previous self and be whoever you want me to be."

  As Yumi's request was carried out, Keiko's demeanor changed. The flirtatiousness and playfulness remained, but any trace of his previous identity as Kenichi, Yumi's brother, faded away. He truly became a new persona, fully embracing the fun and creativity of the moment.

  Yumi and Eiko couldn't help but applaud the transformation. "You're a true chameleon, Keiko!" Eiko exclaimed with a grin.

  Keiko continued to pose and entertain under the shower, embodying his new persona with enthusiasm. It was a night filled with laughter, creativity, and the joy of embracing the unexpected.

  "Now, Keiko is your true and only persona," smiled Yumi, "You're no more my brother."

  Keiko, fully embracing his new persona, nodded with a playful and flirtatious smile. "I am Keiko, your one and only persona, ready to bring glamour and fun to your world, Yumi."

  With Yumi's request, Keiko had fully shed any remnants of his previous identity as Kenichi, becoming a unique and entertaining persona solely for Yumi's amusement.

  Yumi and Eiko continued to enjoy the playful antics of Keiko, grateful for the laughter and creativity he brought into their lives. It was a night filled with fun and the joy of embracing the unexpected, all thanks to the imaginative adventures made possible by the Neuro-Control Collar.

  "This is unbelievable," wondered Eiko. "Hey, Keiko, now come here, show your mannequin self to us."

  With a graceful and playful strut, Keiko, still in his flirty swimsuit model persona, stepped out of the shower and into the room. He posed with the same charm and charisma that he had displayed earlier, showcasing his mannequin-like appearance for Yumi and Eiko.

  Eiko couldn't help but be amazed by the transformation. "It's like having a living fashion model right here in your house!"

  Yumi grinned, thoroughly enjoying the absurdity of the situation. "Indeed, Eiko. The Neuro-Control Collar has given us a night we'll never forget. Keiko, show us your best mannequin poses!"

  Keiko, with a flourish, struck a series of elegant and stylish mannequin poses, adding a touch of glamour to the room. The friends continued to revel in the unique and entertaining experiences made possible by the collar, fully embracing the unexpected and playful adventures of the evening.

  "Bam!" Yumi playfully hit the mannequin's forehead with her finger causing it to tumble over and fall on the floor with a loud plastic sound.

  Yumi's playful tap caused Keiko, the living mannequin, to lose his balance and topple over with a comical plastic thud. He lay on the floor, still in his mannequin pose but now on his back, his glassy eyes looking up at the ceiling.

  Eiko and Yumi burst into laughter at the unexpected turn of events. "Oops! Sorry, Keiko," Yumi giggled, unable to contain her amusement.

  Keiko, ever the good sport, maintained his mannequin-like composure, adding to the laughter in the room. It was a night filled with playful absurdity, and the friends couldn't help but enjoy every moment of it.

  Yumi, with a few taps on her phone, reversed the personality upload, restoring Kenichi's original identity and consciousness. As the process completed, Keiko's playful swimsuit model persona gave way to Kenichi's familiar self.

  Kenichi blinked, looking around in confusion for a moment before realizing the situation. "What just happened?" he asked, a puzzled expression on his face. "Why I'm woman mannequin wearing the swimsuit?"

  Yumi and Eiko couldn't help but burst into laughter as they saw Kenichi's confused reaction. "Oh, Kenichi, you were quite the entertaining mannequin for a while," Yumi replied, still chuckling.

  Eiko explained, "Yumi used the Neuro-Control Collar to change your personality temporarily and have a little fun. You became Keiko, a playful swimsuit model."

  Kenichi's eyes widened in surprise as he processed the explanation. "I can't believe I missed all of that. It sounds... interesting," he said with a bemused smile.

  Yumi grinned. "Well, you were a good sport about it, Kenichi. It was all in good fun. But now you're back to your regular self."

  The friends continued to laugh and reminisce about their unusual evening, grateful for the lighthearted and unexpected adventures they shared thanks to the Neuro-Control Collar.

  "Wait," chuckled Kenichi, checking his completely featureless mannequin crotch under the swimsuit's bottom. "Are you sure you returned me back to my original self?"

  Yumi and Eiko couldn't help but burst into laughter at Kenichi's comical observation. They exchanged amused glances before Yumi replied, "Sure, my mannequin brother. You don't need anything there anymore," knocking on his empty plastic crotch with her hand.

  Kenichi's playful comment and Yumi's follow-up made them all laugh even harder. "You got me there, Yumi," Kenichi said, still grinning. "I guess I did get quite the makeover as Keiko."

  "Keiko or Kenichi, you are still my brother," smiled Yumi, detaching his upper mannequin torso from his pelvic area, "And I have complete control over you."

  Yumi's playful teasing and demonstration of control over Kenichi's mannequin form caused all three of them to burst into laughter once again. Kenichi couldn't help but laugh along with them.

  "You certainly know how to keep things interesting, Yumi," Kenichi remarked with an amused twinkle in his eye.

  Eiko added with a grin, "It's been an unforgettable evening, that's for sure," as she helped Yumi to disassemble her brother.

  "Here, this is your home, your bed, and your travel case," smiled Yumi, as she prepared an empty cardboard box for her brother.

  Kenichi chuckled as he was disassembled and placed back into the cardboard box. "Thanks for the adventure, Yumi. I never expected to become a mannequin for the evening."

  Yumi grinned as she sealed the box, making sure her brother's various mannequin parts were secure. "You're welcome, Kenichi. It was all in good fun. And remember, you are a woman mannequin now, completely identical to my body figure. Just remember, you're my mannequin now, ready to be posed and played with whenever I want."

  With a final laugh and a playful wink, the friends concluded their unforgettable evening of creativity and adventure, all thanks to the imaginative possibilities brought to life by the Neuro-Control Collar.

  The next day, after school, Yumi returned to her home again with her friend Eiko.

  Yumi and Eiko returned to Yumi's home after another day of school, looking forward to whatever adventures and creative experiments lay ahead. The previous evening's escapades with the Neuro-Control Collar were still fresh in their minds, and they couldn't help but wonder what fun they might have today.

  "Here," smiled Yumi placing the shopping bags on her bed, as they visited the nearby clothing boutique on their way home. "Let's see, what we bought again!"

  Eiko's eyes sparkled with curiosity as she joined Yumi by the bed, eager to see what treasures they had acquired during their shopping excursion. They both peered into the shopping bags, revealing an assortment of clothing items they had purchased.

  Yumi took out a fashionable dress from the bag and held it up for inspection. "Look at this one, Eiko. It's perfect for a night out, don't you think?"

  Eiko nodded in agreement. "Absolutely, Yumi. It's stylish and elegant. You have a great eye for fashion."

  As they continued to explore their purchases, they shared their thoughts on each item, discussing potential outfits and accessories. It was clear that Yumi and Eiko both had a passion for fashion and enjoyed their shopping adventures together.

  Eiko glanced at the box, lying under Yumi's bed and chuckled, "Heh, we can use your brother to admire our new purchases!"

  "You know, that's not a bad idea, Eiko. Kenichi could serve as our personal mannequin to showcase our new outfits."

  Eiko laughed at the playful suggestion. "It would be like having our very own fashion show right here in your room!"

  Yumi grinned mischievously at the idea. "Exactly, Eiko! Kenichi, our trusty mannequin, will help us bring our fashion fantasies to life."

  They both retrieved the cardboard box containing Kenichi's mannequin parts from under the bed and began to reassemble him. Piece by piece, they put him back together, making sure he was securely in place.

  Once Kenichi was fully assembled, they dressed him in one of the new outfits they had purchased, carefully selecting accessories and shoes to complete the look. With their fashion-forward creation ready, they couldn't help but admire their handiwork.

  "He's the perfect model for our new clothes," Yumi remarked with a grin.

  Eiko added, "And he won't complain about changing outfits or striking poses."

  Yumi giggled, glancing under the skirt, "Kenichi, do you like your new matching black underwear set?"

  Kenichi, in his mannequin form, remained silent and motionless, unable to respond to Yumi's playful question. His glassy eyes stared straight ahead, maintaining the poised and unmoving appearance of a mannequin.

  "Oh," smiled Yumi, as she tapped the "Wake up" button on her phone.

  As Yumi tapped the "Wake up" button on her phone, Kenichi's mannequin-like form began to stir. His glassy eyes blinked a few times before he looked around, taking in his surroundings.

  Yumi and Eiko couldn't help but chuckle at the comical sight of Kenichi in his new outfit. "Kenichi, you make a great mannequin model," Eiko teased with a playful wink, "So, do you like your new underwear set?"

  Kenichi, now fully conscious and aware of his surroundings, couldn't help but blush at the playful teasing. He glanced down at the matching black underwear set he was wearing and then back at Yumi and Eiko. "Well, it's not exactly what I expected when I woke up this morning, but I guess it's a stylish change," he replied with a sheepish grin.

  Yumi and Eiko burst into laughter at Kenichi's good-natured response. "You're a trooper, Kenichi," Yumi said with an amused twinkle in her eye. "There is an evening already. You were sleeping in your box under my bed all day."

  Kenichi chuckled, realizing that he had indeed spent the entire day as a mannequin in a box under Yumi's bed. "Well, it's certainly been an eventful evening, to say the least. I never expected to be a fashion model for my own sister and her friend."

  Eiko grinned, "You're quite the versatile mannequin, Kenichi. But now that you're awake, we can continue our fashion show."

  Yumi nodded in agreement. "That's right, Kenichi. Get ready to strike some poses and show off our new outfits!"

  With their playful fashion show underway, Kenichi embraced his role as the temporary mannequin model, helping Yumi and Eiko bring their fashion fantasies to life. It was another day filled with creativity, laughter, and unexpected adventures, all thanks to the imaginative possibilities unlocked by the Neuro-Control Collar.

  A few hours later, after their fashion show had concluded, Yumi and Eiko decided to take a break and relax in Yumi's room. They chatted and laughed about their fun-filled day, grateful for the unique experiences they had shared.

  "Should we turn your brother into something more compact and handy?" smiled Eiko.

  Yumi and Eiko, still in a playful and adventurous mood, considered Eiko's suggestion. They both glanced at Kenichi, who was currently in his mannequin form, dressed in one of their newly acquired outfits.

  "That's an interesting idea, Eiko," Yumi replied with a mischievous grin. "We could turn Kenichi into something more compact and portable, like a plastic vibrator."

  Eiko burst into laughter at Yumi's suggestion, finding it both amusing and daring. "Wow, Yumi, that's quite a creative idea. Turning your brother into a portable vibrator, it would be the most unique one-of-a-kind toy."

  Kenichi, still in his mannequin form, couldn't help but blush at the conversation. He had gone along with their playful adventures so far, but this suggestion took things to a whole new level.

  Yumi winked playfully at her brother. "Don't worry, Kenichi. You'll like this new experience," giggled Yumi, as she took her phone again.

  With a few taps on her phone, Yumi initiated the transformation process. Kenichi, in his mannequin form, began to change, his plastic body shifting and reshaping. His features transformed into a sleek and compact design, perfectly suited for the role they had in mind.

  As the transformation was completed, Kenichi now existed as a small, portable vibrator, ready to fulfill their creative and daring fantasies.

  Eiko couldn't help but burst into laughter at the sight of the unique and unconventional toy they had created. "Wow, Yumi, you really did it! We have our own custom-made vibrator!"

  Yumi grinned mischievously, holding the tiny vibrator in her hand. "Indeed, Eiko. Kenichi, meet your new role as our personal pleasure device."

  Kenichi, now in his compact form, couldn't believe the turn of events. He had gone from being a mannequin model to a vibrator, and he could only blush and chuckle at the unexpected adventure he had found himself in.

  Eiko added with a playful smirk, "I guess this is one way to ensure that Kenichi is always at our beck and call."

  The friends shared a round of laughter, thoroughly enjoying the playful and daring adventures that the Neuro-Control Collar had brought into their lives.

  As the night approached, Eiko gathered her things and prepared to leave Yumi's home. It had been a day filled with laughter, creativity, and unexpected adventures, thanks to their imaginative use of the Neuro-Control Collar.

  "Thanks for the fun day, Yumi," Eiko said with a warm smile. "It was definitely one for the books."

  Yumi grinned in agreement. "Absolutely, Eiko. We always manage to find unique ways to have a good time. See you at school tomorrow!"

  "Ah, Yumi," smiled Eiko, "Can I borrow your brother for a night?"

  Yumi raised an eyebrow at Eiko's request, her playful spirit still in full swing. "Borrow Kenichi for a night, you say? What do you have in mind, Eiko?"

  Eiko chuckled, her expression mischievous. "Oh, just a little adventure of my own. I promise I'll return him in one piece."

  Yumi laughed and nodded. "Alright, Eiko, you can borrow Kenichi for the night. Have fun with whatever you have planned, and remember, he's quite versatile."

  Eiko winked playfully. "Thanks, Yumi. I'll make sure to put Kenichi to good use. See you tomorrow!"

  With that, Eiko left Yumi's home, carrying Kenichi, now in his portable vibrator form, with her. Yumi couldn't help but chuckle as she watched her friend depart, knowing that their adventures with the Neuro-Control Collar were far from over.

  Eiko, having returned home from Yumi's place with Kenichi in his portable vibrator form, decided to make the most of her borrowed companion. She had spent some time thinking about how to best enjoy this unique experience.

  After taking a refreshing shower, Eiko settled into her bedroom, her curiosity and excitement building. She glanced at the compact vibrator, knowing that it held the essence of Kenichi within.

  With a playful smile, she activated the vibrator, and it came to life with a gentle hum. Eiko couldn't help but wonder how this experience would compare to their previous adventures with the Neuro-Control Collar, but she was eager to find out.

  As the night unfolded, Eiko explored the pleasures and sensations that Kenichi, in his vibrator form, could provide. It was an adventure unlike any other, filled with surprises and excitement, all thanks to their imaginative use of technology and a touch of daring creativity.

  "You such a sleek and naughty thing, Kenichi," Eiko teased him, pressing his smooth and slender plastic form against her breasts.

  Kenichi, in his vibrator form, buzzed with excitement as Eiko pressed him against her breasts. The sensations were unlike anything he had experienced before, and he couldn't help but emit a playful hum in response to Eiko's teasing.

  Eiko chuckled at the vibrator's response, finding the whole experience both amusing and pleasurable. "Well, Kenichi, it seems you're quite the versatile toy. Let's see what other adventures we can have together."

  She took a tube with the lubrication cream and applied the cream to Kenichi's smooth plastic surface, ensuring a smooth and enjoyable experience. Kenichi's vibrations intensified in response, adding to the sensations Eiko was feeling.

  As her arouseness heightened, Eiko pressed Kenichi against her crotch with a moan, "Oh, you're such a plastic penis."

  Kenichi, in his vibrator form, couldn't help but blush at Eiko's words. He was enjoying the unique sensations that his new form provided, and he hummed in response to Eiko's teasing.

  Eiko smiled in delight as she felt the vibrations ripple through her body, taking her pleasure to a whole new level. She continued to explore the vibrator's capabilities, experimenting with different speeds and angles to maximize her pleasure.

  "Oh, what you have here? A vibration mode selector?" giggled Eiko, touching a dial at Kenichi's base.

  Kenichi, still in his vibrator form, hummed in response as Eiko explored his different settings. He was amazed at the versatility of his new form, and he couldn't help but smile as he felt the sensations ripple through his body.

  Eiko grinned as she experimented with the different vibration settings, finding the perfect balance of intensity and pleasure.

  "That's a nice one, Kenichi," smiled Eiko, as she settled into the perfect sensation.

  Kenichi, still in his vibrator form, hummed in response, the vibrations intensifying as he felt Eiko's pleasure. He couldn't help but smile as he felt the sensations ripple through his body, and he knew that this was an experience that neither of them would ever forget.

  Eiko playfully pressed the vibrator's head against her waiting crotch, sending waves of pleasure through her body. She let out a moan as the sensations intensified, and she felt her arousal grow with each vibration.

  "Oh, Kenichi, you're really good at this," she murmured, her voice soft and breathy.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He was amazed at the sensations he was feeling, and he couldn't help but smile as Eiko's pleasure grew with each vibration.

  "Oh, Kenichi! You're going in!" moaned Eiko, as she gently pressed the vibrator's head inside of her.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's tight walls wrap around him. He couldn't help but shiver in delight as he felt her pleasure, and he knew that this was an experience that neither of them would ever forget.

  Eiko gasped as the vibrations intensified, taking her pleasure to a whole new level. She savored every moment, enjoying the unique sensations that Kenichi, in his vibrator form, could provide.

  "A-h, aaa-m," moaned Eiko, pushing Kenichi further, her voice thick with pleasure.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He shivered in delight as the vibrations intensified, and he felt her pleasure grow with each vibration.

  "O-o-oh, Kenichi. You're completely inside me now," moaned Eiko with a smile, feeling as Kenichi filled her completely, completely hidden inside her vagina.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He shivered in delight as the vibrations intensified, and he felt her pleasure grow with each vibration. He was amazed at the sensations he was feeling, and he knew that this was an experience that neither of them would ever forget.

  Eiko moaned as the vibrations intensified, her pleasure reached its peak. She savored every moment, enjoying the unique sensations that Kenichi, in his vibrator form, could provide.

  "Oh, Kenichi, this is amazing. Adjust your movement to a pumping one" she murmured, her voice thick with pleasure.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He adjusted the vibrations to a pumping pattern, the intensity increasing with each thrust. Eiko gasped as the sensations intensified, her pleasure reaching its peak. She savored every moment, enjoying the unique sensations that Kenichi, in his vibrator form, could provide.

  "Oh, Kenichi, this is the best. I'm coming! Coming!" screamed Eiko, as her orgasm hit her with a force she had never experienced before.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He shivered in delight as her orgasm hit her, and he felt her pleasure reach its peak.

  When it was all over, Eiko lay in her bed, spent but content. She playfully caressed her own tummy, with Kenichi still inside her, "You can turn yourself off, a little one," she giggled.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's gentle caress. He turned himself off, his vibrations fading away, and he knew that this was an experience that neither of them would ever forget.

  Eiko lay in her bed, content and satisfied with the experience. She had enjoyed exploring the pleasures of the Neuro-Control Collar, but this new experience with Kenichi had been something else entirely.

  Still leaving the vibrator inside, Eiko put on her panties, and she smiled to herself as she felt Kenichi's presence against her skin.

  "Goodnight, Kenichi," she whispered with a smile, her voice soft and content.

  Kenichi, still in his vibrator form, hummed in response, the vibrations fading away as he felt Eiko's contentment. He knew that this was an experience that neither of them would ever forget, and he smiled as he felt her warmth against his plastic surface.

  Eiko and Yumi met each other again in the classroom the next morning, both with knowing smiles and a shared secret.

  Yumi couldn't help but tease her friend with a mischievous grin. "How was your night with my brother, Eiko?"

  Eiko chuckled, her eyes sparkling with mischief. "Well, he certainly knows how to vibrate with excitement," she replied with a playful wink. "A bit of plastic, but quite the fantastic partner."

  They both burst into laughter, knowing that their escapades with the Neuro-Control Collar had taken their friendship to a whole new level of intimacy and adventure.

  "Did you bring him to school?" asked Yumi.

  "Yup, he's right here, inside me," giggled Eiko, pointing at her crotch.

  Yumi smiled, her eyes wide with admiration. "Wow, that's really something," she said. "So, what are you going to do with him now?"

  Eiko thought for a moment and then smiled. "I'm going to keep him with me, wherever I go," she said. "So that I can always have him close by."

  Yumi nodded in agreement. "That sounds like a great plan," she said. "I'm sure he'll love it."

  The two girls exchanged a knowing smile, both of them happy to have found a special bond that only they shared. And, as Eiko walked off to her next class with Kenichi hidden inside her, she couldn't help but smile, knowing that she had a secret companion who was always there for her.

  The next class was PE. As the girls were changing into their gym clothes, Yumi noticed that Eiko was wearing an extra pair of panties.

  "Eiko, why are you wearing two pairs of panties?" she asked.

  Eiko smiled, her cheeks turning a light pink. "Oh, I'm just taking a little extra precaution," she replied. "I don't want Kenichi getting lost during class."

  Yumi nodded in understanding, and the two girls exchanged a knowing smile.

  As they were running during the warm-up, Eiko could feel Kenichi inside her. She smiled to herself, feeling the warmth of his presence, and she knew that she could always rely on him for companionship.

  "Oh, you are such a naughty friend," smiled Yumi, unlocking her phone. "Let's see how can you withstand this," she giggled, selecting the high-level vibration profile for Kenichi.

  Eiko gasped as the vibrations intensified, her pleasure increasing with each wave. She savored every moment, enjoying the unique sensations that Kenichi, in his vibrator form, could provide.

  "Oh, Yumi! That's... that's... wow!" she exclaimed, her voice thick with pleasure. Unable to run any further, she stopped, leaning against a nearby tree as the vibrations continued.

  Yumi smiled in satisfaction, happy to see her friend enjoying herself. "Come on, let's go," she said, gently nudging Eiko.

  Eiko smiled, still feeling the vibrations inside her. She felt a warmth spreading through her body.

  "What happening?" playfully giggled Yumi, teasing her friend, as she increased the vibration level through her phone.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He shivered in delight as the vibrations intensified, and he felt her pleasure grow with each vibration.

  Eiko gasped as the vibrations intensified. She fell on her knees, pressing the hand against her crotch, trying to contain the pleasure that was coursing through her body.

  "Oh, Yumi! This is too much! I can't take it anymore!" she exclaimed, her voice thick with pleasure.

  Yumi smiled, satisfied with the results, "Come now, Eiko! Come right here!" she giggled.

  Eiko complied, the vibrations still coursing through her body. As she moved, Kenichi's vibrations increased, and she felt the pleasure intensifying with each step she took.

  "Ah, aaaaah", Eiko mightily squirted right there, in the middle of the school grounds.

  Yumi watched in awe as Eiko experienced an intense orgasm, her body trembling with pleasure.

  Kenichi, still in his vibrator form, hummed in response as he felt Eiko's pleasure. He shivered in delight as the vibrations intensified, and he felt her pleasure reach its peak.

  When it was all over, Eiko lay in the grass, completely spent. Yumi helped her up, and the two of them shared a knowing look.

  A few minutes later, inside the changing room shower, Yumi asked her friend "So, what did you think of Kenichi's performance?"

  Eiko smiled, her cheeks still flushed from the experience. "It was amazing," she replied. "I've never felt anything like it before. He knows just how to make me feel pleasure."

  She reached to her crotch and slowly took out the vibrator, still humming softly.

  "He's definitely a keeper," she said with a smile.

  Yumi laughed, happy to see her friend so content. "I'm glad you two are getting along so well," she said.

  Eiko nodded in agreement, and the two of them shared a knowing smile.

  It was clear that Kenichi had become an important part of Eiko's life, and she was grateful for the new experiences that he had brought into her life.

  "Let's wash him a bit," smiled Yumi, taking her plastic brother with her slender hand, and carefully washing him under the shower.

  Kenichi, still in his vibrator form, hummed in response as he felt Yumi's gentle caress. He shivered in delight as the warm water washed over him, and he felt a sense of contentment as he was being taken care of.

  When it was all over, Yumi dried him off with a towel and then put him inside her school bag, where he would remain until the end of the day.

  Eiko smiled, grateful for her friend's thoughtfulness. She was happy to have Kenichi with her, even if it was just for a few hours.

  The two girls smiled at each other and then headed off to their next class. They both knew that no matter what happened, they could always count on each other.

  And, with Kenichi hidden away in Yumi's bag, they could also count on him to be there for them whenever they needed him.

  During the class, Yumi took out her phone and established a chat connection with her brother, who was still tucked inside her own school bag.

  "Hey, Kenichi! How's it going in there?" she typed with a playful tone, knowing that he could feel the vibrations and messages.

  Kenichi, on his side, slightly vibrated due to such an unexpected move from his sister. He eagerly replied through the chat connection, "Hey, Yumi! It's a little different in here, but I'm doing okay. How's everything on your end?"

  Yumi smiled, asking her brother, "Do you ever tired of being in your vibrator form?"

  Kenichi chuckled in response, "Not at all! I actually quite enjoy it. I get to experience things that I wouldn't otherwise be able to, and it's a nice change of pace. Plus, I get to be close to you and Eiko, which is always a plus."

  Yumi smiled, feeling a warmth in her heart. She knew that Kenichi was always there for her, no matter what.

  "Well, I'm glad you're enjoying it," she said. "We'll have to find some other adventures for you soon!"

  Kenichi smiled in response, happy to have such a wonderful sister. He knew that as long as he was with Yumi and Eiko, he would never be alone.

  "Alright, what do you have now in mind?" smiled Eiko, as the girls returned to Yumi's home after school.

  Yumi smiled, her eyes twinkling with mischief. "I was thinking of a threesome. With my phone, I can turn Kenichi into a double-sided dildo and we can enjoy him together."

  Eiko gasped, her cheeks flushing. She had never even considered such a thing before, but she couldn't deny that the idea excited her.

  Yumi smiled, watching her friend's reaction. "Come on, let's go," she said, leading the way to her room.

  Once inside, Yumi carefully took her brother out of her school bag with a smile and then activated his double-sided dildo form.

  Eiko gasped, watching in awe as Kenichi transformed before her eyes. She couldn't believe that he could do such a thing, and it excited her even further.

  "See, how long he can become," giggled Yumi, as she and Eiko got ready to enjoy Kenichi together.

  She playfully pulled down her school blouse and skirt, and then guided Eiko to lie down on her bed.

  Eiko complied, her heart pounding with anticipation. She felt a thrill of excitement as Yumi unclasped her bra, revealing her breasts, and then placed Kenichi between them.

  Yumi smiled as she watched her friend experience pleasure for the first time. She gently moved the dildo up and down, creating waves of pleasure that rippled through Eiko's body.

  Eiko moaned in delight, her body trembling with pleasure. She felt as if her entire being was melting into the bed, and she was filled with an intense pleasure that she had never felt before.

  "Sure, my brother is very elastic," smiled Yumi mischievously, pulling down her panties, and then guiding Kenichi between her legs.

  Eiko gasped, watching in awe as Yumi pleasured herself with her brother. She felt a warmth in her heart as she watched the two of them together, and she was filled with a deep admiration for Yumi's courage and openness.

  "I want him too!" moaned Eiko, watching as Yumi started to pleasure herself with her brother's long and slender form.

  Yumi smiled, understanding her friend's desire.

  "Then come here, girl," giggled Yumi, parting her legs apart invitingly. She slowly pushed one side of Kenichi into her own pussy, moaning with pleasure.

  Eiko eagerly approached, her body already trembling with anticipation, "Do you prefer the scissors pose? How sexy."

  Yumi smiled, guiding Eiko's hips towards her own.

  "Yes," she moaned, her eyes closed in pleasure as she felt the two of them connected.

  "Oh, Kenichi," smiled Eiko, as she took the dildo with her own hand, "You're so deep in your own sister now." She gently pushed him, penetrating Yumi's depths with her tender movement, the pleasure intensifying with each stroke.

  Yumi gasped, her entire body trembling with pleasure. She felt as if she was being taken over by the sensations, and her body was beginning to quiver with pleasure. Eiko smiled, her hand still moving in a gentle rhythm. She was amazed at how good it felt to be connected with her friend in this way, and she loved the feeling of being in control.

  "Your pussy sucking your dildo-brother in, Yumi," Eiko giggled, her voice filled with awe.

  Yumi nodded, her body shaking with pleasure. She had never felt anything like it before, and it was even more intense than she had imagined. She just moaned in response, "Kiss me Eiko, kiss me now."

  Eiko complied, leaning in and pressing her lips against Yumi's. The two girls shared a passionate kiss, their tongues dancing in perfect harmony. Yumi felt as if she was melting into the bed, and the pleasure was overwhelming her. She quietly reached with her own hand and inserted the other side of her brother into Eiko's wet pussy, her fingers gently caressing her friend's clitoris.

  Eiko gasped, her entire body trembling with pleasure. She felt as if she was being taken over by the sensations, and her body was beginning to quiver with pleasure.

  The two girls smiled at each other, both filled with joy. They knew what to do now, as she pressed their pelvises closer to each other, pushing Yumi's brother deeper into both of them.

  They moved in perfect unison, their bodies intertwined and their pleasure growing with each thrust. They moved faster and faster, until they both reached the peak of pleasure, screaming in unison as they experienced the most intense orgasm of their lives.

  "Oh, oh, oh. Eiko, faster!" moaned Yumi, with her pussy walls holding strong on her own brother's dildo form.

  Eiko smiled, pushing her hips harder against Yumi's as she felt her own orgasm build up. She felt as if she was about to burst.

  They slapped their hips against each other, pushing Kenichi further into both of them.

  "M-h-h-h, I'm coming, Yumi!" screamed Eiko, her body trembling with pleasure.

  Yumi smiled, her own orgasm quickly approaching. She felt as if she was about to burst, and she let out a loud cry of pleasure as she finally reached the peak.

  The two girls lay there afterward, their bodies still trembling with pleasure. They held each other tightly, their faces filled with joy and satisfaction.

  "That was amazing," whispered Eiko, her voice filled with awe.

  Yumi smiled, her heart full of love. She had never felt so connected to someone before, and she knew that this experience would stay with her forever.

  "Yes, it was," she said, her voice filled with love.

  As they moved apart, the dildo slipped out of them, and Yumi carefully took it with her hand. She smiled, knowing that she would never forget this special moment.

  "Thank you for this, Eiko," she said, her voice filled with gratitude.

  Eiko smiled, her heart filled with love. She knew that this experience had changed her life forever, and she was thankful for having shared it with Yumi.

  "Thank you for trusting me," she said, her voice filled with emotion.

  Yumi nodded, her eyes twinkling with happiness. She knew that as long as she had her brother and her best friend, she would never be alone.

  And with that, the two girls embraced each other tightly, knowing that their bond was unbreakable.

  As they lay in each other embrace on Yumi's bed, they knew that they had created something truly special. They had shared a moment of pure bliss, and they would never forget it.

  The two girls lay there afterward, holding each other close and feeling the warmth of their bond. They had experienced something that only few can ever experience, and it was something that would stay with them forever.

  No matter what life throws at them, they will always have each other. They were connected in a way that no one else could understand, and they were grateful for that.

  Eiko and Yumi smiled at each other, their eyes filled with love and admiration. They had shared a moment that was truly special, and it was something that they would never forget.

  "That was a nice idea to use my brother in his double-sided mode," chuckled Yumi, as she took the sticky and slippery toy from her bed again.

  Eiko smiled, her eyes twinkling with amusement.

  "Yes, it was a great idea," she said, her voice filled with affection.

  The two girls shared a smile, knowing that they had shared something that was truly unique and special. They had created a moment that would stay with them forever, and they would always be grateful for it.

  And with that, the two girls lay there in each other's embrace, feeling the warmth of their bond and the joy of their shared pleasure. They had experienced something that only a few could ever experience, and it was something that would stay with them forever. They had created something truly special, and they would never forget it.

  The next morning, as they woke up early, Eiko and Yumi started to prepare themselves for school, their minds full of the memories of the night before. They knew that they had shared something truly special, and they were thankful for that.

  Eiko chuckled and remembered her own experience of having Kenichi inside her during school. "Listen, Yumi, I just have a kinky idea. Do you want to keep your brother close during the day? I mean, in the form of an anal plug or beads?"

  Yumi smiled, already imagining the sensation. "Yes, that sounds like a great idea! I think it would be a lot of fun to have him with us during the day."

  Eiko nodded, her eyes twinkling with excitement. She had never done something like this before, and she was looking forward to the experience.

  The two girls giggled as they shared a kiss, and then they quickly got dressed and went to school.

  "Oh, almost forgot," giggled Yumi, pulling down her panties, "Brother, you're going inside," she giggled. As Yumi unlocked her phone, she tapped at the transformation option again, choosing the profile of an anal plug.

  With a tap on the screen, Yumi's brother, who was still in the form of a double-sided dildo since yesterday, was now transformed into an anal plug. His smooth and black rubbery surface glistened invitingly under the ceiling lights, creating a sight that made both girls giggle.

  Yumi and Eiko smiled at each other, feeling the warmth of the moment. They had created something truly special, and they were thankful for it. They were ready to start their day, and they knew that no matter what, they would always have each other.

  "Let me help you a bit with your... brother," giggled Eiko, as she took the tube with the creamy lotion. She lubed up the plug, and then she slowly inserted it inside Yumi's butt.

  Yumi gasped with pleasure, as she felt the plug slowly filling her up. She felt as if her body was melting with pleasure, and she moaned softly as the sensation took over her.

  Eiko smiled, feeling the warmth of the moment. She knew that this experience was something that the two of them would never forget.

  "Alright, guys, you two are all set," chuckled Eiko, playfully tapping with her nail on the Kenichi base, which was sticking out just slightly between Yumi's butt cheeks.

  Yumi giggled, feeling the sensation of the plug inside her. She was amazed at how pleasurable it was, and she thanked Eiko for her help.

  The two girls smiled at each other, knowing that they had created something truly special. They were ready to start their day, and they knew that no matter what, they would always have each other.

  With the all preparations over, Yumi pulled up her panties, smoothening them with her hand. She fixed her clothes and pulled up her school skirt too.

  As Yumi fixed her clothes and pulled up her school skirt, she couldn't help but feel a sense of excitement and anticipation for the day ahead. The memory of the special connection she shared with Eiko and her transformed brother as an anal plug added a hint of adventure to her routine.

  "We're going to school, Mom," smiled Yumi and opened the door.

  As Yumi headed to school, her mind was filled with the memories of the experiences she had shared with Eiko and her transformed brother. The unique connection they had formed had added an exciting twist to their daily routine, and Yumi couldn't help but feel a sense of anticipation for the day ahead.

  The classes were pretty same, just like always. As Yumi sat on her school chair, she felt her brother's presence inside her. His smooth contours were gently pushing her from the inside, adding a sense of pleasure and connection to her everyday life.

  She took her phone again and enabled the chat feature, "Kenichi, how is your feeling inside my butt?"

  "I feel great, Yumi. The feeling of being inside you is quite amazing. I can feel your warmth and your love, and I'm so grateful for that," replied Kenichi.

  Yumi smiled, feeling the warmth of her brother's words. She was so happy that she had found a way to keep him close to her, even when they were apart.

  Their classmate Kana watched Yumi with a giggle. She was the creator of the Neuro-Control Collar, which became the stylish part of the plug's exterior, and she was quite proud of her invention. She knew, that Yumi was having absolute control over her brother through this thing, and Kana was pleased to have been a part of it.

  Giggling mischievously, Kana opened the administrator access to the Neuro-Control Collar, allowing her to alter Yumi's brother's shape.

  "Let's see what I can do with this," she said, her fingers moving quickly as she adjusted the settings of the collar.

  Within a few minutes, Yumi's brother started to increase in size, still being tucked inside his sister's butt as an anal plug. Yumi gasped, feeling the sudden change in her brother's shape. She felt the pleasure that came with the bigger size, and she couldn't help but smile.

  "Oh, brother. This is too much," silently moaned Yumi, feeling the pleasure of the bigger size.

  Kana watched with a satisfied smile, knowing that Yumi was enjoying her invention. She was glad that she had been able to help Yumi and her brother share this special moment, and she was proud of her creation.

  She increased Kenichi's size further. His smooth form started to push Yumi's bladder inside, creating a sensation that was both pleasurable and uncomfortable.

  Yumi gasped, feeling a mix of pleasure and discomfort. She was amazed at how her brother's shape could create such a unique sensation.

  "S-s-s-s-sensei! Can I go out to the toilet?" asked Yumi, as the pressure inside her lower body increased.

  "Yes, of course," nodded the teacher, and Yumi quickly rushed out of the room.

  Once she was in the toilet, Yumi pulled down her panties and looked at her brother in awe. His size had increased significantly, and he was now pushing her from the inside, creating a sensation that was both pleasurable and uncomfortable.

  She positioned herself over the toilet, allowing the urine to leave her bladder, and a strong stream hit the bowl below.

  Yumi sighed with relief, feeling the pressure slowly decrease inside her. She was amazed at the power of her brother's shape.

  She tried to pull her brother out of her ass, but it was too big. She tried to push it back in, but it was too slippery.

  She looked around for something that could help her, and she spotted a lube bottle on the shelf. She quickly grabbed it and lubed up her brother. After that, she tried to pull him again. But still with no success. The anal plug was still buried deep inside her butt.

  Yumi sighed. She was feeling a bit frustrated. She had no idea what to do.

  Suddenly, she heard a knock on the door. It was Kana.

  "Hey, are you okay in there?" asked Kana.

  Yumi opened the door and Kana saw the situation.

  "Oh my, Yumi. You turned your own bother into an anal plug?" teased her Kana.

  Yumi nodded, feeling embarrassed.

  Kana smiled, "And he is too big for your butt, Yumi?"

  Yumi nodded again, her face turning red.

  Kana chuckled, "Let me help you. I have something that can help."

  Kana opened her bag and pulled out her phone with administrator access to Kenichi's shape. She adjusted the settings, and soon enough, the plug was back to its original size.

  Yumi sighed with relief, feeling the pressure inside her butt decrease. She reached and took out her brother out of her own butt, and she couldn't help but feel a bit proud of herself.

  Kana smiled, "You did a great job, Yumi. You managed to turn your brother into an anal plug. That's quite an accomplishment."

  Yumi smiled, glancing at the rubbery form of her brother, "Should we wash him a little?"

  Kana nodded, "Yes, of course. Let's go to the sink."

  The two girls washed the plug with soap and warm water, and soon enough, it was ready to be used again.

  "Here you go, little brother," giggled Yumi, putting the plug inside her school bag.

  Kana smiled, "Let's go back to class now. We don't want to be late."

  Yumi nodded and the two girls headed back to class.

  The experience of turning her brother into an anal plug had been quite interesting for Yumi. She had found a way to keep her brother close to her, even when they were apart.

  She was also grateful to Kana for her help. With the help of Kana's invention, Yumi had managed to create something truly special. And she was looking forward to more adventures with her brother and Eiko.

  The two girls smiled at each other, knowing that they had created something truly special.

  Later that day, Eiko and Yumi met up after their classes, their faces filled with excitement and anticipation for the adventures they would share.

  "So, what do you think we should do next?" Eiko asked with a mischievous smile.

  Yumi chuckled, her eyes sparkling with mischief. "Well, I have a few ideas in mind," she replied, "but I think we should save them for a special occasion. But for now, we can visit a local cafe to enjoy the tea and some sweets. What do you think?"

  Eiko grinned, her curiosity piqued. "A local cafe sounds like a great idea," she said. "It will give us a chance to relax and chat about our next adventure."

  The two friends headed to the nearby cafe, their minds filled with anticipation for what the future might hold. They knew that they had created something truly unique and special, and they were excited to explore more adventures together.

  As they settled at the free table, the cozy ambiance of the cafe enveloped them. The soft murmur of conversations, the aroma of freshly brewed tea, and the gentle hum of the espresso machine created a welcoming atmosphere.

  Yumi and Eiko glanced over the menu, their eyes scanning the various tea and dessert options. They couldn't help but feel a sense of excitement as they contemplated the possibilities for their next adventure.

  "What kind of tea are you in the mood for?" Yumi asked, breaking the menu's silence.

  Eiko thought for a moment and then replied, "I think I'll go with the jasmine green tea. It has a soothing and fragrant quality to it."

  Yumi nodded in agreement. "Jasmine green tea sounds perfect. I'll have the same."

  They signaled the waiter and placed their orders, then settled back into their seats, eager to enjoy the tea and discuss the exciting adventures that lay ahead.

  Yumi unzipped her bag and carefully took out her transformed brother, placing him on the cafe's table. The discreet and unassuming appearance of the anal plug made it easy to blend in with their surroundings.

  Eiko couldn't help but giggle as she watched Yumi set her brother on the table. "You really do enjoy having him with you, don't you?"

  Yumi smiled, her eyes filled with affection. "Absolutely. It's like having a little secret companion with me wherever I go. Plus, it adds a thrill to our adventures."

  Eiko chuckled, understanding Yumi's sentiment. "I have to admit, it's quite exciting. Our little secret brings a whole new level of adventure to our daily lives."

  As they waited for their tea to arrive, Yumi and Eiko chatted about the various adventures they had shared and the ones they were planning for the future. They couldn't help but feel a sense of closeness and intimacy, knowing that they had a unique bond that no one else could understand.

  Their conversation flowed easily, filled with laughter and excitement. They discussed their fantasies, desires, and the ways they could incorporate Kenichi, in his transformed form, into their adventures.

  When their jasmine green tea arrived, they sipped it slowly, savoring the delicate flavors and the warmth it brought to their bodies. Kenichi, in his discreet form as an anal plug, sat on the table, a silent witness to their friendship and the special connection they shared.

  Eiko chuckled, sipping her tea, "Should you change your anal plug into his human form? To enjoy the tea with us."

  Yumi considered Eiko's suggestion for a moment and then nodded with a mischievous smile. "Why not? It would be fun to have him join us in his human form for a little while."

  With a few taps on her phone, Yumi initiated the transformation process. Kenichi's anal plug form gradually morphed into his human form, and within moments, he was sitting at the cafe table with them, looking just like his usual self.

  Kenichi smiled, feeling the warmth of the cafe and the company of his sister and her friend. "This is a pleasant surprise," he said.

  Eiko chuckled, her eyes twinkling with amusement. "Indeed, it's quite a unique experience to have you switch forms like this."

  As they enjoyed their tea and chatted about various topics, Kenichi shared in their laughter and conversations, feeling like just another friend at the table. It was a testament to the close bond they had formed and their willingness to explore new experiences together.

  The cafe's cozy ambiance and the presence of their transformed companion made the afternoon feel special, filled with the promise of even more exciting adventures in their future.

  Yumi giggled, munching the tiramisu, "Say, dildo-brother. Did you enjoy all the transformations, we have been used on you?"

  Kenichi chuckled, taking a sip of his tea before responding, "Well, it's certainly been an adventure. I never imagined I'd experience so many different forms and sensations, but it's been quite enjoyable, to be honest."

  Eiko grinned, leaning in closer, "And what was your favorite form so far?"

  Kenichi paused for a moment, contemplating his answer. "Each form has been unique in its own way," he began, "but I think being an anal plug and experiencing the intimate connection with Yumi was one of the most memorable moments for me."

  Yumi nodded in agreement, her eyes filled with affection for her brother. "It was a special experience for all of us," she said softly.

  Eiko giggled, "Sure, Kenichi. You like warm and tight places. I must admit that."

  Kenichi blushed slightly, but he couldn't help but laugh along with Eiko's teasing. "Well, I suppose you could say I've developed a fondness for unique experiences," he replied with a playful grin.

  The three of them continued to enjoy their tea and desserts, their laughter and camaraderie filling the cozy cafe. They knew that their adventures together were far from over, and the bond they shared would only grow stronger with time.

  As the afternoon sun began to dip below the horizon, casting a warm glow over the cafe, Yumi, Eiko, and Kenichi shared a toast to their friendship and the many exciting moments they had yet to discover. They were ready for whatever adventures lay ahead, knowing that they would face them together, with a special connection that no one else could understand.

  "Do you like us both?" giggled Eiko, playfully asking Kenichi.

  Kenichi smiled, his eyes filled with warmth and affection. "Of course, I do," he replied. "You both are amazing friends and lovers, and I'm grateful for the unique bond we share. I enjoy every moment we spend together."

  "Even if I'm your own sister?" chuckled Yumi.

  Kenichi nodded, his smile unwavering. "Yes, even if you're my sister," he said. "Our connection goes beyond family ties. It's something special and unique that I cherish."

  Yumi and Eiko smiled at each other, feeling a deep sense of affection and gratitude for the bond they shared with Kenichi. They knew that their friendship and adventures would continue to bring them closer, and they were excited for the future.

  Eiko teased her, "A brother complex, to be sure. How is pretty."

  Kenichi laughed, his cheeks turning a faint shade of pink. "Well, maybe just a little," he admitted. "But I'm lucky to have such wonderful friends like you two."

  Yumi grinned, playfully nudging her brother. "We're lucky to have you too," she said. "And I have to say, our adventures wouldn't be the same without you."

  As they continued to chat and enjoy their time together in the cafe, Yumi, Eiko, and Kenichi couldn't help but feel a deep sense of contentment and happiness. They knew that their bond was something truly special, and they were excited to see where their adventures would take them next.