An Evening Party

Mi-Cha was still the center of attention.

It was already after curfew, and everyone was supposed to be in their tents, but Angie and Jes had two of their friends over: Nikky and Sasha.

The twins allowed Mi-Cha a short rest after dinner, but that was short-lived. Now the girl was on the floor in front of the other girls, and she had been masturbating for their amusement.

She was ordered to spread her legs, push out her chest, and use her left hand to rub over her pussy. Her orders were to keep close to the edge of orgasm but not actually hit the edge. MPA would monitor her body and punish her if she hit the edge or got too far away from it.

They wanted the girl to be as horny as possible, but still be able to register her surroundings as they talked about her.

Nikky was a petite Latina who liked to compete with the twins and edge them on. She wanted to prove that she was meaner than them so they would accept her.

Sasha on the other hand was one of their past victim. She was a tall skinny blond with blue eyes and beautiful face. They were using her mostly as their personal servant and tormented her whenever she would not do what they wanted. Right now she was happy that the twins had an eye on Mi-Cha instead of her.

Shivers run through Mi-Cha’s body as the four girls discussed everything that has happened to her so far, from being a sex toy on the bus to being fucked by Carter and Harry during dinner. They especially laughed at Harry hitting Carter afterwards saying that he must fancy Mi-Cha and be jealous of Carter fucking her pussy instead of her.

Mi-Cha's eyes went from one girl to another to see if any of them would take mercy on her or help her in any way. But all the girls had a mean expression of cruel amusement.

Even Sasha seemed to enjoy being part of the mean girls instead of being the one bullied. Instead of showing any empathy, she reached out and twisted one of Mi-Cha’s nipples.

The tormented girl gasped as she got too close to the edge and had to slow down her fingers or be punished. All she could do was expose her body and walk the thin line just shy of edging herself.

There was already a wet pool of juices underneath her as she continuously stoked her inner flame and her body continue to produce lubrication in hopes that there is a big cock coming in.

Angie stood up to bring Mi-Cha's backpack and pulled out the small, smooth vibrator to show it to the other girls. It had a strange black sheen to it.

"The slut had this packed in with her. Based on its booklet, it's called the Universal trainer, although it's rather small and disappointing. We think that since her mother is single and she has no brothers, she is made to use that to exercise."

"Is that true, Mi-Cha," asked Jes and squeezed the girl's breast to get her attention.

As usual, Mi-Cha chose not to respond, but her eyes were looking at the item with a very obvious discomfort.

"I see that you still haven't trained her to respond to you properly," said Nikky. "Has she at least told you yet when her last orgasm was?"

"No, the little bitch, obviously needs harsher training," Jes responded with barely hidden anger.

"But she is learning," Angie added. "We were still able to make her masturbate for us, and she listens to commands quite nicely, look."

Angie looked into Mi-Cha's eyes and commanded: "Take one of your tits into your right hand and suck on your nipple until you are told to stop."

Mi-Cha moved with no hesitation and did as ordered. Her tender nipple was in her mouth, and she was nursing herself at the applause of her audience.

"So what about the toy?" Nikky asked.

"The booklet says: Universal Trainer. Bring the device into the proximity of the MPA of a registered guardian of the registered trainee." Angie said and brought the divide to her MPA control tablet.

Immediately, a syncing alert showed up, and then pairing was confirmed.

Temporary Guardian registered. Universal Trainer is ready. Tutorial?

The girls leaned in and watched with curiosity while Mi-Cha started feeling even more uneasy.

Angie confirmed the tutorial, and the device vibrated lightly in her hand in acknowledgement.

The Universal Trainer is a modular device that pairs with its trainees' MPA implants to provide a wide variety of functions.

A long list of exercises started scrolling but quickly disappeared, and a new message popped up.

The Universal Trainer can change its size and shape based on the guardian's preferences or the requirements of a set exercise. Demonstration.

Angie yelped in surprise when the device started changing in her hand from a smooth bullet shape into a large, ridged cock with a bulbous head until it grew into an obscene size.

The device can also achieve various stimulation, including vibrations, pulses, shocks, rotations, and thrusts.

The toy was shortened into a more manageable size but maintained its cock-like shape. Then it started vibrating until it was very uncomfortable to hold in Angie's hands. It then started pulsing by actually rapidly changing its shape.

Angie dropped it once it started giving out electrical impulses.

It was still on the floor when, in front of the wide-eyed girls, it grew three bulges at different spots and started rotating in different directions around those.

Finally, it even showed its thrusting function by rapidly changing its length.

When it stopped moving, Nikky picked it up, but it changed back into the smooth bullet until she returned it to Angie.

Please select an exercise or activate a function to use the device.

The final message showed up, and a full menu with options appeared.

All the girls started immediately arguing about what to do while Mi-Cha watched them, still sucking on her tit and her fingers rubbing across her wet pussy.

"So what's your favorite exercise, you bitch," asked Jes.

There was no response, just dread in the girl's eyes.

"Just make her push it into her, and we will see what all those functions do inside of her," suggested Nikky.

"Ok, slut," said Angie.

"Stop doing what you are doing and push it inside."

Mi-Cha stopped but looked unsurely at the smooth bullet waiting for her in the outstretched hand.

"It's not like you can fight us all," Jes said impatiently and took the toy to quickly shove it into the girl's pussy.

It went in with no resistance from her wet folds.

Mi-Cha knew that she would not be able to remove it, as the device would resist her unless a guardian ordered her to take it out.

"There we go. Now let's go through these."

Angie touched the size slider and started slowly expanding it.

Mi-Cha could feel it grow inside of her quickly.

Contextual options popped up for shape and forms of attachments. The girls selected a thick cock shape and something called external attachment.

While only Mi-Cha could feel the change in the shape inside of her, all the girls could see a protrusion pop out of her, which quickly molded around her pussy, enveloping her lips and clitoris.

The black sheen of the material looked almost translucent and it closely mirrored her shape leaving her pussy looking exposed even when covered by it.

"Look, more settings are available," Nikky explained excitedly.

After a few touches, they could see the whole surface start rippling outside, massaging her pussy lips and clitoris. The same rippling was also happening inside the girl, who started breathing heavily in response to the stimulation.

"Oh, this is good!" exclaimed Angie excitedly.

"It seems to have some 'trained presets'," pointed out Sasha at part of the screen.

The girls opened up the presets, and Angie started happily tapping away, and all the girls watched Mi-Cha's reaction to the first change.

Maximum trained vaginal filling

Mi-Cha gave out a deep groan while her hand shot down to cradle her abdomen. There was a visible swell.

The Korean girl started rocking her hips back and forth to relieve some of the pressure while the rippling sensation still continued. Her pussy was now stretched to a degree that it started being painful and very uncomfortable.

Nikky slapped Mi-Cha's hand away and pressed her own palm against her abdomen. She could feel the hard swell as well as the ruppling inside.

"You guys have to feel this!" She yelled.

All the girls move in touching Mi-Cha in response.

The poor girl was meanwhile brought to another edge of climax and held there by the merciless machine. No matter the pain, the stretched feeling combined with the stimulation of her clitoris was too much.

"This must be quite uncomfortable," Sasha said with her own hand pressed against ripples inside.

"Well, she does seem to like it, though," Nikky commented, pointing at the edged girl.

Jes had to hold her body up and support her; otherwise, she would be on the ground curled into a ball.

Angie turned off the rippling and waited for Mi-Cha to be able to stand on her own again.

"Just make the thing punish her if she can't stand on her own," Jes suggested.

Angie handed her the tablet so that she could pick the punishment setting.

"Slut, stand at presentation," Jes commanded.

Mi-Cha straightened up, spread her legs wide apart, put her hands behind her head, and pushed her chest forward.

The large phallus inside of her was still highly uncomfortable, but at least she was not getting more overstimulated for now.

The ladies noticed that the toy was not set to block her juices because there was obvious new wetness on her thighs, but Angie quickly changed that. She wasn't sure what would be happening with all the wetness the girl seemed to produce all the time, and at least there would be none of that to clean on the floor now.

Maximum trained erogenous shape

Angie announced a new preset combined with the previous one.

Mi-Cha felt the change.

Somehow, it was more comfortable, but she was still stretched, and there were new kinds of pressure as the toy adjusted. It modified its shape and pressed now more against her G-spot and even her cervix. Her opening also felt more stretched.

There was now no give when she tried to clench; she was filled completely with a toy trained to find all her pressure zones to push against.

The girls noticed that even the outside attachment was changing. Without the rippling, it closely followed the shape of what was underneath.

Mi-Cha's pussy lips were now stretched apart, and the hood of her clit was pulled back while the material tightened against its base,e making the large button stand out like a sore thumb.

"Hmmm," Nikky says, a bit disappointed since there wasn't much of a visible shift outside.

"Now, let's see if she can remain standing," Jes said and added, "We have the options for pulsation, vibrations, rippling, and thrusting."

"What about those goal-oriented settings?" Sasha asked.

"It shows goals: overstimulation, number of edges, edge holding, edge avoidance. Training data used to maximize outcome."

The girls started immediately arguing about the best option while Mi-Cha just stood there in anticipation.

Angie stopped the others and decided to try talking to their victim instead.

"Mi-Cha, describe what each of these options does. Otherwise, we will make you do a lengthy demonstration of each."

Mi-Cha hesitated and gulped, but decided it was better for her to talk.

"Overstimulation will just attack everything at once, and it will keep it that way until it is turned off."

When there were no other questions, just a bunch of girls hanging on her every word, she continued: "The Number of edges will be going up and down with stimulation. It will get me to the edge and then let me come down, making sure that I am fully alert for each. It changes the methods and timings to keep me guessing, and it maximises the power of the edge and cuts off as soon as I get there."

Mi-Cha's pussy tried to clench, but there was no give from the intruder inside of her.

"The edge holding quickly gets me to the edge and holds me there. It's different from the overstimulation by being less powerful. It gives just enough to keep me at the edge and actually slows down finding the minimum amount of stimulation that keeps me there and nothing more."

"The edge avoidance will cycle through different forms of stimulation, and it will continue stimulating me without allowing me to hit the edge. It can, for example, just focus on suctioning my clitoris for a while and then switch to deep thrusts inside of me."

There was a bit of silence until Sasha spoke up: "Which one is the worst?"

Mi-Cha seemed to hesitate again, but responded: "The overstimulation and edging make me just black out after some time. They are horrendous but don't last as long. The edge holding and edge avoiding are maddening. They just keep working me, and there is no escape."

Jes started saying something to Sasha's ear, who then asked: "When was your last orgasm?"

Mi-Cha gave a look that made the whole group laugh.

"Maybe we should just keep edging her or avoiding the edge until she finally tells us that," Angie said, laughing.

"I just want to see how long she manages to keep standing," Jes finally decided impatiently and pressed the overstimulation button.

Mi-Cha immediately felt the **** everywhere at once.

Her clitoris was squeezed at the bottom, and strong vibrations started running through it while it was massaged at the same time.

The overstimulated G-spot got pressed in with deep pulses, stirring it and making it throb in response.

Inside of her pussy, she could feel different parts of the toy start rotating and bristling in different directions.

Her walls tried to clench violently, but they were stretched to the fullest, and the toy resisted all her attempts.

It didn't take more than a few seconds for her to fall down on all fours with her hips humping the air.

Angie quickly turned off her vocal expressions through her implants, worried that one of the teachers would come investigating.

The punishment for her not holding the position started.

Mi-Cha felt her body seize up and take a preset position with her chest pressed down against the floor and her ass pushed out as if offering itself. Suddenly, she wasn't able to shake or moan; she was just held there. Even if she wanted to return to her position, she wouldn't be able to.

"That was pretty fast," Jes said, bursting into laughter.

"I set it so she will be held like this until the punishment is turned off, and it will also add a phantom dick into her ass. It will replicate Carter's dick, but this time, instead of her pussy, it will be her asshole getting all of the action. With that toy, it must feel pretty snug inside of her."

The girls watch Mi-Cha, but she was perfectly still, just holding her position silently. The only visible moments were caused by her quick breathing and the movements of the toy on the outside of the pussy.

Nikky put her hands against the extension covering the girl's lips and clitoris.

"Wow, she must be really getting worked over. The vibrations are so strong that it's hard to even hold my hands against it.

Angie tried to push against it next: "Yeah, it's like a fluid steel; there is no give in it either. At the same time, you can see it moving across her outer lips and massaging her clit. It's sort of mesmerizing."

"I wonder how she is feeling now. She is like a statue, but it must be quite intense," Sasha added with her hand touching Mi-Cha's ass.

"Maybe we should get you one of those as well, so you can find out," Jes smirked.

Sasha turned pale at that and then red at the image of her being in Mi-Cha's position: unable to move while a machine was driving her body wild without any mercy and with no breaks.

"So, should we just wait for her to black out or play with her some more?" Angie asked, feeling bored already.