The K App: Silver - Cover

The K App: Silver

by Krosis of the Collective

Copyright© 2025 by Krosis of the Collective

Mind Control Sex Story: A deceitful young man gets a power-up.

Caution: This Mind Control Sex Story contains strong sexual content, including Ma/Fa   Mult   Mind Control   NonConsensual   Heterosexual   Incest   Mother   Daughter   First   Masturbation   Oral Sex   Pregnancy   Sex Toys   Big Breasts   Teacher/Student   .

Tim MacTavish ran and ran, once again late for school. He heard his phone chime but had no time to look at it. “Fuck me ... fuck me ... fuck me ... ACK!” He ran into a lady coming around a corner, nearly knocking both of them to the sidewalk. “Sorry, lady ... fuck me...”

Her eyes gave him a once-over. “Why?”

“Uh, what?”

“Why should I fuck you?”

He took a closer look at the woman ... brunette, maybe thirty, wearing tight jogging gear. While athletic, he could see some jiggle in her wiggle. However, he was a boring, brown-haired 18-year-old virgin with nothing to offer her. “You ... shouldn’t? Sorry.”

“Oh, okay. Maybe don’t proposition strangers?” She jogged off.

He shook his head. “Weird.”


“Mr. MacTavish!”

“Goddamnit...” Tim turned to see the vice principal stalking toward him down the hallway. The balding man was wearing his typical brown sports blazer with a Loony Toons tie today. “Hey, Mr. Barber ... I’m sorry I’m late, but the bus drove right by my stop so I had to run ... could you please give me a pass?”

The older man considered. “That seems plausible ... very well ... come on...” He led Tim to his first class and told the teacher to forgive the young man’s tardiness.

Tim just stood there, stunned. Hardass Barber just believed him? He’d actually slept in after staying up too late playing video games. “Thanks, Mr. Barber.”

The man gave him a nod and left.

After sitting in his seat, Tim’s mind was still whirling, what with literally running into that strange woman and then the VP’s weird acceptance of his lie. He was having trouble concentrating on class, so decided to check his phone. On the screen was a colorful, stylized K logo and a notification: Silver Tongue. He frowned down at the screen.

“No phones in class, Tim.”

He looked up to see the teacher standing in front of his desk holding out her hand. “Sorry, Mrs. Buchannon ... I, uh, was checking for a message ... about my grandmother ... she’s very sick.”

The older woman lowered her hand. “Oh dear! Well, try not to check it too much.” With that, she headed back to the front of the class. The students nearby gave Tim some supportive comments. He tried finding some controls on the weird new app, but it was just the logo. Finally, he tucked the device back into his pocket.


“Sorry to hear about your grandma, Tim.”

He looked up from his lunch to see Sherry ... something ... began with a C. “Thanks.” The girl sat down across from him. He’d been sitting alone, as per usual, so this was notable.

“I was raised by my grandma,” she told him. “My parents died when I was young.”

He nodded, unsure how to respond. As he ate, he kept the girl in his peripheral vision. Pretty, with wavy brown hair and glasses, plus a huge fucking rack that was pushing out her sweater. She turned, waved at a female friend a few tables over, then turned back and winced as one of her boobs impacted the table. She gave him a sheepish grin as she cradled the huge mammary.

He thought back to the app. Silver Tongue? “Uh, have you been tested for breast cancer?”

She paused. “I’m only eighteen.”

“You can get cancer at eighteen.”

She looked concerned. “Really? How do I test for it?”

He looked around. “You have to, um ... well, you don’t want to do it here.”

She had a serious face on now. “Where?”

“C’mon, we’ll go to the nurse’s office.”

Sure enough, the nurse was out for lunch. Now alone with the girl, he closed the door behind and they sat on one of the cots.

“You have to, uh, massage your breasts ... make sure there are no lumps,” he directed her.

She gripped her huge boobs, which he figured were at least double-D, through her sweater. “Ungf.”

“Here...” He took a hold of the bottom of her sweater and lifted it up, her undershirt coming along with it. “You shouldn’t have anything in the way or you might miss something.” Instead of slapping or yelling at him, the girl raised her arms so he was able to take her top off, revealing her industrial-strength brassiere. His eyes boggled at the vast expanse of pale cleavage that was now pointed right at him. When she started massaging again, he stopped her. “Nothing in the way, remember?”

She hesitated. “Um...”

He thought quickly. “You really don’t want breast cancer ... that’s what my grandmother has, and it’s been terrible.”

“O-okay...” She reached back, her face blazing, and unfastened the titsling, which practically flew from her body due to the released tension.

Sherry’s areolas were small compared to the sheer amount of boobflesh around them, but her nipples were large, gumdrop-shaped nubs that practically demanded that they be sucked. But how to convince her of that while she was testing for cancer? She began massaging again.

“Umm ... not like that.”

She paused. “I’m doing it wrong?”

“Yes ... I can show you, okay?” He slowly moved his hands up.

She lowered hers. “I ... okay. Mmn...” she sighed as his hands sunk into her soft orbs.

He was in absolute heaven with his fingers delving into her warm milkers. So squishy! “You, uh, have to really get in there, like this.” He pushed his fingers deeper. His erection was straining to be released.

“Hngh...” Sherry’s face continued to blaze as she winced again.

Once he’d gotten his fingers everywhere else, he moved them to her nipples and found that they were hard.

“Mmh...” she sighed, her eyes closed. He could see her knees rubbing against each other under her skirt. “Ooh!” She blinked her eyes open, smacked his hands away, then leaned over, shaking. “You’re, uh, done, right?”

His cock was aching in his pants. “Sherry, you want to make out?”

She grabbed her bra and started fastening it up. “Why?”

“I was just touching your boobs and you’re asking why?”

She paused. “Weren’t you just helping me check for cancer?”

He realized that if he said no, then that would mean that he’d lied about it. If yes, then he was just being helpful, not amorous. But still... “Yeah, but I really like you.”

She pulled on her shirt. “We haven’t really talked before today. What do you like about me?”

Huge gazongas. “You’re ... nice...” Huge gazongas. “ ... and pretty...” Huge gazongas.

She pulled her sweater back on. “Glad you didn’t say my boobs. I’m gonna have to get reduction surgery if they get any bigger. Listen, Tim, you’re nice too ... I appreciate you helping, but...” The bell rang. “ ... we have to get back to class. Uh ... I’m clear for cancer, right?”

“Err ... yep!”


Tim spent the rest of the school day with blue balls. Thinking about the app that seemed to be amplifying his ability to convince someone of something, he’d considered asking a girl to help release the pressure, but couldn’t come up with a good argument. If he propositioned someone and failed, he’d be sent to the principal’s office! Finally, he walked home.

On the way there, though, he spied a hand-painted poster with colors that reminded him of the app and stepped close to read it: “Have you seen the K App? Call me!” There was a number, so he pulled out his phone and dialed it.

A man answered. “Hello?”

“Hey, uh, I saw your poster about the app...”

“Do you have it on your phone, or did someone use it on you?”

“It’s on my phone...”

“Dude, don’t use it! That thing is evil! My stepdaughter...” He broke off.

“What about your stepdaughter?”

“Uh, never mind ... it’ll ruin your life ... fuck with your friends and family. I tried posting about it online, but each time, my post disappeared! I had to hand-draw the posters. I’m begging you, guy, you have to resist!”

“Well, thanks for the advice, but I just touched naked boobs for the first time earlier today, and it wouldn’t have happened without the app. Seeya.” He hung up. When the guy called him back, Tim blocked him.

As he got home, he called out to his parents, “Hey, I have a lot of homework to do, so please leave me alone until dinner, okay?”

“Okay, kiddo,” his dad called back.

Once the young man had his door closed, he pulled his just-under-six-inch peter out and whacked it hard, cumming into some tissues less than a minute later, his legs shaking. He actually did have homework, so with his suddenly-clear head, he was able to work on that until dinner. He didn’t even try to use the app on his parents, his mother being completely unattractive to him, though he realized that it had probably helped to avoid a conversation when he got home.


At school the next day, he continued trying to come up with good reasons to get his rocks off, but kept falling short in the ideas department. Have the nurse check his balls for cancer? After looking up how intrusive that procedure would be, he decided against it, especially since it would likely end the same way it did with Sherry: clinical, with no sex at all.

As he passed the girls’ change room after gym class, he decided to try his luck and walked in. The senior girls were all there in various levels of undress. He tried to look everywhere at once: a fit blonde was pulling her bra onto her B-cups ... a dark-skinned beauty was bent over, pulling her red panties up and ... he angled his neck to peer into the darkness between her legs.

“Hey!”

He jumped. One of the girls had noticed him and covered up. Others squealed and did likewise.

He held his hands up and half-covered his eyes. “Sorry! I totally walked into the wrong change room. My bad.” He shuffled back toward the exit.

“Okay, but be more careful, huh?”

“I will, thanks!” He stepped back out into the hallway. Yes! But now his balls were aching again.


The last class ended with a stupid sex education video, which didn’t help the soreness between his legs. The video showed some diagrams of the male and female bodies, as well as what happens when a woman gets pregnant, but it was dry, and of course ended with the advice of abstinence.

“Any questions?” Ms. Dunphy asked afterward. She was a somewhat pretty, late-thirties lady with auburn hair. The students looked around, sheepish and silent.

The final bell rang and all the students shuffled out. Tim was in the back, so was one of the last remaining, but then he turned around and headed to his teacher’s desk. “Ms. Dunphy?”

She looked over her librarian glasses at him. “Tim! What can I do for you?”

“I, uh, I’m having trouble with some of the concepts in that video.”

She gave him a smile and he realized that the older woman was actually really pretty. His eyes dipped to her D-cup cleavage and then back to her blue-green eyes.

“Oh, you should have mentioned that while everyone was still here.”

He shuffled his feet. “It’s embarrassing ... I really have no idea about any of that stuff. I, uh, learn more from experience than just being told how to do things.”

She gave him an understanding smile. “I know what you mean ... my daughter’s much the same.” Her grin faltered. “Still...”

“Please! You’re a really great teacher, and I think I could learn a lot from you ... uh, about sex, and making babies.” He felt his phone suddenly heat up in his pocket, but kept his attention on the sexy older woman.

She turned her chair toward him and crossed her pale legs under her dark, knee-length skirt as she considered. “Well, you’re a very good student ... it would be remiss of me to not help you round out your education, and the timing is right.” Finally, after a few agonizing seconds, she told him, “Go close and lock the door.”

 
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