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Chapter 34
by
Ggnt
What's next?
Bust or Brains
Mira was on her feet the moment the professor dismissed them. She rushed out of the lecture hall, removing her blazer and unbuttoning her shirt as she went.
Entering the bathroom she didn't even wait for the privacy of a stall before removing her shirt to expose her heaving chest. She was so itchy she couldn't wait another second.
She finally made it inside and closed the door. With her tits taken care of, she had another problem to deal with. Her vibrator had started up during class and was busy driving her wild. She NEEDED to cum.
With no man around she had one choice. She'd picked the accessible stall for this reason, but it was still a little gross to get down on her hands and knees in the bathroom. She set up her phone to record and slipped her hand into her panties.
It didn't take her long to reach her peak, and she fought to keep her voice down as she came. Then, compelled by her rules, she immediately sent the video to one of her contacts at random and then, so she'd finally get rid of that rule, she posted the video to R/gettingherselfoff. Of course she'd angled the camera to avoid her face, but she was rather embarrassed, and turned on, knowing thousands of people would be watching her tits sway as she came.
Her phone buzzed. It was Sierra replying to the video with 'lol'.
Mira sighed. As least her loophole meant no more Asha situations. She'd figured out that she had to send it to a contact, but she didn't have to keep her contact list intact. She'd just deleted everyone except those that knew about the rulebook. She didn't like sending those videos to anyone, but better Sierra than her mom.
Mira stood up and adjusted her skirt. She really wanted to put her shirt back on but she'd have to wait, unless she wanted to repeat this immediately. Her tits were still a little itchy for that.
Truthfully she was getting a little perverse enjoyment out of all these rules. That night with Sierra was completely stuck in her mind and having the vibrator go off in class was so naughty she thought about it whenever she masturbated. But still, it was getting to be a bit too much.
She needed to get rid of some rules. She needed some wins.
Inspired by Ken, she decided to ask for permission to run her own game. She sent her friends a message asking to discuss it. She wasn't worried, just like with Ken as long as she had a fair chance to win or lose she knew they'd agree. After all it wouldn't effect them at all.
They agreed, of course, but it did take her a couple days to decide exactly what game to play and go over the rules with them. Still she eventually had it all written in the rulebook and was ready to launch her game.
Of course it wasn't ideal. Given her...condition...she would have preferred something more private, and much, much shorter. But Ken and Sierra had made it worth her while. Unlike previous games, this time she couldn't lose.
Well...she could, but only by not playing at all.
She hurried along the path to the campus quad, a large open space in the middle of campus that was always full of students going about their business. She'd tried to move it someone more discrete, but she'd been overruled. The humiliation was the point after all.
There it was, her home for the next 8 hours. There was a large wheel dominating the center of the quad. A sign above it announced the title of her game, Brains or Bust. Each slice of pie on the wheel had either Brains or Bust written on it. From a distance it appeared to be equal odds for either choice, but in fine print under the wheel the true odds were given by an equation with a note that magic would influence the odds based on the bet.
Beside the wheel was a stood for her to sit on. The stool, the sign and the wheel were all contained within a two metre by two metre square marked with thick black tape on the ground. The moment she stepped passed the line, the game began. She had to 'work' an 8 hour shift to earn her reward, leaving the square of her own violation would result in failure. Her only relief would be planned breaks where Ken or Sierra would come fetch her to go to the bathroom or whatever else she needed.
She took a deep breath and then stepped over the line. She smoothed her skirt and sat down on the stool and waited for her first customer.
She didn't have to wait long.
Ken had put an ad in the school paper promising a way to earn extra credit. He didn't even use the rulebook to do it, and he didn't lie. The game was very simple. Players would bet their grades and would either win and earn a higher grade, or lose and receive a punishment. The ad had intentionally been vague on the punishment, so naturally those suffering from bad grades would be rather curious.
Her first customer was entirely nude. Poor girl was totally devoid of tan lines, she'd probably been this way since they'd written the uniform rule. She wasn't even trying to cover herself anymore.
"Uh hi...this is where, um, we can get extra credit?" She asked.
Mira nodded, "Yup. You just tell me how much of your grade you want to wager and then give it a spin. Wagers are based on your G.P.A., in increments of 0.1. So if you had a 2.0 G.P.A. and bet 0.5, that's a bet value of 5 you'd either go down to 1.5 GPA or up to 2.5 GPA after you spin."
"Um, and...this p-punishment?" She asked nervously, "What exactly is it?"
Mira shrugged, "I don't know," She was being honest, "But the game is called Brains or Bust. You can probably figure out something from that."
The woman stared at Mira blankly.
Mira sighed and pointed to her own chest, "Bust? Get it?"
The woman looked down at her own bare tits, "Umm...no?"
Oh right, Mira thought, regular people aren't used to the rulebook dished out punishments. She explained, "You'll receive a punishment, most likely about your chest, based on your bet. Higher bets will result in more severe punishments. I have no influence on the punishments, you understand, it's a rule."
"A rule..." The woman hesitated. Mira hadn't wanted to totally override free will, the rulebook had only been used to enable this game and get people to accept the magical elements of it. The actual risk? That was all on them to accept. She gulped, "Well...if I don't get my grades up I'm getting expelled...and I'm tried of being naked all the time. I'll bet 1."
Mira smiled, a rather fake smile, poor girl didn't even glance at the odds. "Go ahead and spin." Mira said, not that it would matter.
The woman spun and of course it landed on BUST.
Instantly the woman's chest swelled, "You just earned a cup size. Want to spin again?"
The woman stared at her chest, then hefted her boobs one by one, "That's..." Mira had used a new rule so even though she would accept that it was real, she was rather shocked by it. She eventually nodded, "Yes. I have to keep going. Another one."
Of course it resulted in another BUST. In fact Mira had rigged the game somewhat. The equation that gave odds actually gave a negative result when you plunked in a 1. It was impossible to win without taking on more risk.
"Another cup size. The boys will be happy," Mira said, "Again?"
The woman gulped, "Y-yeah. If I just lost 0.2...fuck it. Go big or go home right? Literally. I'll bet it all, 1.0. I don't think it's even possible to drop below 1 but whatever, I'm done anyway."
Mira stared at the woman. Maybe dropping out was the best thing for her? But whatever, it wasn't her business, "Spin then."
The wheel spun around and around and around. Finally it stopped, the woman screamed, "Yes! YES!!!!"
She'd hit brains.
She was pretty excited for a woman with only a 2.0 G.P.A. "Fuck! I think I get panties now!"
"Do you want to keep going?" Mira asked.
She shook her head, "No, better quit while I'm ahead. Thank you so much!" She bounced away. Literally, her new tits giving off quite the show as she moved. Mira was glad she was able to help someone. The way she'd written the rule her grade change wasn't just superficial, it boosted her grade while giving her the knowledge she should have had to get it in the first place. Of course knowledge and intelligence are not the same thing so she might be doomed to fail anyway, but maybe she'd just had a rough start to the semester.
After her first customer left a line started to form. Most people thought they were playing it safe. Just a bet of 0.1, and when that inevitably failed they'd quit and walk away. Mira was pretty sure the average bust size on campus would be up at least a few inches by the time she was done this game.
Besides the most frequent punishment of increased bust size, there were also punishments given out like an intense need to flash people periodically, extremely sensitive nipples or the inability to touch your own chest. All of the focus on breasts made it had for Mira to ignore her own. As time ticked by the itchiness got worse and worse. She glanced at her phone. There were still 20 minutes until her first break. She scratched at her tits through her shirt, even knowing it wouldn't help at all. Just a little bit more...
"Hi! So it's my turn now?" A bubbly blonde woman said, "I'm Emma by the way."
"Hi Emma...Mira. Yes, it's your turn. How much do you want to bet?"
"Uh...what's the equation? I can't do that in my head." Emma asked, pointed below the wheel.
Mira was pretty shocked it had taken someone so long to notice it, she'd been at it for almost two hours. But then again the most eager customers were the ones with the lowest grades and Mira had used the rulebook to prevent anyone from using a calculator, sharing the anwer with anyone else, or going away to work on it. You either got it, or you didn't.
Mira shrugged, "It is what it is, so what do you say?"
"Well...I have a 3.6 already...so let's say...0.4. I'd love a perfect GPA." Emma said cheerily.
Mira was skeptical that this busty blonde had a 3.6, but then she shook herself. She shouldn't be judging based on appearances alone. Besides her uniform was as pristine as Mira's own, she must be in the 10% club. "Ok, spin the wheel." Mira said.
Click click click click...
"Bust! Damn." Emma said, "Whelp, what's my punishment?"
The rulebook sent it directly to Mira's mind, "Permanent nipple piercings. You can change the piercings, but never remove them."
Emma felt a prick in either nipple and then pulled her shirt out to take a look, "Holy shit, that's amazing...how does it work..."
"It's a rule." Mira said.
"Right...um...well fuck. I didn't think that through, now I'm down to a 3.2 GPA? I guess...I'll spin again. 0.4 again."
Another loss. Emma cursed as Mira said her punishment, "Can't cover chest for 4 months."
Immediately Emma started to remove her clothes. She tossed her blazer, shirt and bra on the ground as quickly as she could and stood there, chest heaving, with her new jewlery on full display.
"Fuuuck. A 2.8 puts me out of the 10% club for sure. No, I gotta get it back. I'll wager 0.8 this time, no, 1.0."
Emma didn't know it, but the odds maxed out just above 50% at a bet of 1.0. It didn't surprise Mira at all when she won.
Emma jumped up and down, "Yes! Ok, quit while I'm ahead. I'm out." Emma picked up her clothes and hurried away.
Mira looked around and saw Sierra walking over. She waited for her, "Is it break time?"
"Yup, come with me." Sierra put up a Be Right Back sign and escorted Mira to the bathroom.
Mira immediately took off her shirt and bared her breasts then made use of the facilities. When she was done she left the stall and pleaded with Sierra, "Can I take a longer break? My chest is soooo itchy!"
Sierra smirked, "It's been 7 minutes. You have 3 more."
Mira took all 3, waiting until the last moment before dressing. 10 minutes of freedom had been far too little and barely reduced the itching at all.
After her break time seemed to fly by, or rather, Mira paid almost no attention to her victims. Her own needs were so pressing, she wanted desperately to rip her shirt off and free her tits.
When one woman foolishly bet 1 and lost her right to wear tops for a day, Mira had finally had it. Along with the victim Mira stripped off her shirt and exposed her tits to the world.
"Uh..." The woman said slowly.
"Solidarity?" Mira tried, "Whatever, are you spinning again?"
"Uh, no..." The topless woman ran off.
Mira looked for the next person in line and was surprised to see a man there, "Uh, hi." She said, not bothering to cover herself. She knew from experience that her arms would make her itch just as much as a shirt would, "Can I help you?"
"Yeah, I want to play." He said.
"Y-you read the ad...right? It's for women only." Mira said.
"That's sexist." He said, "Discriminatory. I demand you let me play."
"It's called Brains or Bust...the punishments related to, well, your bust."
"So? Can I spin or not?" He asked.
Mira sighed, "Fine. But don't say I didn't warn you."
"Then I'll wager 5. Or 0.5 I guess. Whatever." He said.
Click click click click...the board game to a spot, "Bust. You lose," Mira said, "And your punishment is...F cups."
"F cu-OH MY GOD!" He screamed as his chest suddenly swelled, "Fuck?! I have tits? What the hell?"
Mira shrugged, "I warned you. That's the rules. Still think I'm being sexist?"
"HUH? What? YES!" He said.
"What grade did you have before? I wonder if after the revaluation you'll end up topless..." Mira teased.
"Fuck! Turn me back!" He yelled.
"Can't," Mira said, "I wonder...if you bet really big and lose it might make you 100% woman, would that be better?"
"NO!" He screamed.
"Oh, then enjoy those tits. You can grope yourself as much as you want." Mira pointed out.
"No, please..." He begged.
Mira sighed, "Fine. Do you know the breast inspector? Go find him and ask for help. Tell him Mira gives permission to fix you. No promises though."
"Breast Inspector...got it. Ok." He covered his chest with his arm and went looking.
"Next!" Mira called.
Mira let a few more players go before the inevitable happened. The phantom vibrator activated.
She couldn't leave without forfeiting, and she couldn't make herself cum in public like this. She just had to grin and bear it until Ken came for lunch. She knew it would be hard, but that's why she'd made the game foolproof. She didn't have to play or even interact with the people. As long as they announced their bet and spun, the game took care of itself. Even announcing the punishment, the rulebook meant she couldn't fail to do so.
Of course it was embarrassing, obviously aroused and uncomfortable squeezing her legs together while sitting topless in the busiest spot on campus. Embarrassing, and kind of hot. Knowing it wouldn't stop no matter what happened, knowing she had no control over it, well, if she could have cum from mental stimulation alone, she would have.
When Ken showed up to bring her to lunch, she was so on edge she couldn't even stand on her own. Ken held her arm and helped her away. He was leading her to the cafeteria for food, but that's not what she wanted.
"K-Ken...I...I need..."
"I know," Ken said with a grin, "I'll give you permission."
"You will?"
"Sure, no problem. You just need to give me permission to add a rule to edit your game a little. Nothing serious, just a little fun."
"What...what are you going to do?" Mira asked.
Ken winked but didn't answer. Instead he guided her to a booth in the cafeteria and told her to wait. He returned in a few minutes with a tray full of food for her.
"Let's start with your more urgent needs," He slid in beside her, partially blocking others view of her, "Why don't you take care of business now?"
"H-here? With you watching?" Mira had been indulging her exhibitionist side, but this was too much. It was bad enough that she was topless. She'd resigned herself to that when she accepted this game, but masturbating, right beside him? Out of the question.
Ken clicked his tongue, "I thought you might have a problem with that. So here..." He set a box down on the table.
Mira snatched it up and put it underneath the table before anyone saw it, "A vibrator? You brought a vibrator here?" She asked.
"Not just any vibrator. It's remote controlled. During the game you're going to be watched constantly, so you just need a man's permission to finish whenever you are close, right?"
Mira glanced at him skeptically, "Y-yes..." Or she could get down on her hands and knees in front of the crowd. That would be far more embarrassing than trying to hide an orgasm while sitting on the stool.
"Well you sent a rather busty man my way. I appreciate big boobs, but the beard ruined it. Anyway I talked with Sierra and came up with this idea. He's going to stand 'guard' beside you for the rest of the game. If you need to cum, ask him for permission and he'll grant it. Every time you cum, he'll lose a cup size, until he's back to all male physique."
"So the rule to change my game is that?"
"Mostly," Ken grinned, "I'm also going to make it so you can't remove the vibrator until the end of the game, and you can't touch the remote."
"F-fine." Mira agreed. She was **** at this point.
But Ken didn't help her, not then. She had to somehow eat lunch while right on the edge, then eventually made her way back to the stool, the vibrator tucked snugly in her panties.
The male victim from earlier was waiting for her. Ken handed him the remote with a grin, "Enjoy!" He said, "Both of you."
The man didn't hesitate. He turned it on full speed and Mira was instantly gasping for air. She looked at him, "P-please...can I cum!"
"Yes." He said. Mira gripped the edge of the stool as the orgasm rocked her. The vibrators, the real and phantom one, both shut off. At least Ken had put cool down limits into the rule.
After a little while of random students coming by Mira finally saw someone she recognized. "Keisha?" She gasped, "What are you doing ehre?"
Keisha glared at her, "Am I not allowed? I want the extra credit."
"But...but..." Keisha was probably the smartest person on campus. Rumor was she had a 3.99 G.P.A. What the hell did she want to risk it all for?
Keisha immediately glanced at the equation, "-.52(x-10)^2 + 52*sin(pi/x/5). Intersting...do all these idiots realize betting 1 is worthless?"
It looked like Keisha had immediately solved it. That didn't surprise Mira. It wasn't a hard equation, it was just meant to be long enough and written small enough that most people wouldn't bother.
Keisha wasn't most people.
"I'll bet 10 of course." Keisha announced.
"It's not worth it..." Mira said, but the bet had already been made. If Keisha spun, it was valid, Mira couldn't intervene.
"What do you know of it?" Keisha said, "Dr. Plinker is a fool who dared to dock me marks, well, let's see who has the last laugh." She appraoched the wheel and spun.
Bust.
Keisha had lost.
"Bust...you'll gain 800cc breast implants and be unable to cover your upper body without permission from a man." Mira explained.
Keisha's chest immediately swelled as she was **** to strip down. She glanced at the man standing beside Mira, "May I dress?" She asked. She didn't try to cover her breasts and she didn't look embarrassed. If anything she looked bored.

The man shook his head, 'No way. You look hot!"
"Figures..." Keisha said, "Alright I'm getting another 10." She approached the wheel.
Click click click click...
Mira was actually hoping she'd win. She didn't want to imagine Keisha of all people flunking out.
"Bust..." Mira announced, "You can't speak unless a man has groped your tits within the last 60 minutes."
Keisha rolled her eyes and glanced at the man beside Mira. She pointed at herself lazily.
"Uh...really? Yeah." He walked over and grabbed both her tits.
"Enough." Keisha said as soon as she could. "Again. Another 10."
"Keisha..." Mira warned.
"The odds are in my favour." Keisha explained. She spun without hesitation.
"Brains, you're back up, you can-"
"Again. 10." Keisha said and spun before Mira could say anything.
"Brains, you broke even..." Mira said.
"Again. 10." Keisha spun immediately.
"Brains...I guess...congratulations?"
Keisha smiled, "A small price to pay for a perfect grade."
"Uh...ya...you're smart, but you are kind of dumb too, aren't you?" Mira asked, "Those punishments...was it really worth it?"
"You wouldn't understand," Keisha turned and strolled away, not even bothering to pick her clothes up off the ground.
Mira scratched her head, she really didn't understand. But then the phantom vibrator kicked it and she couldn't worry about it anymore.
By the time Sierra came for her afternoon break her 'guard' had made her cum enough times to free himself from any suggestion of boobs. He'd left the remote on the ground and left as soon as he could.
Mira couldn't touch the remote, so it was still there for Sierra to pick up. Sierra stared at the board, "So...there's a trick to that equation, isn't there?"
Mira shrugged.
Sierra hit a button and the vibrator flared to life, "Isn't there?" She asked again.
"I can't say! It's a rule!" Mira said. She gasped as the vibrator teased her, trying to think of a loophole. "I'd bet 10 if I could..." She said quietly.
"10? That's a lot..." Sierra said. She stared at the board, "A boost to my GPA would be nice...I guess I can always fix it with the rulebook later. Ok, I'm in. I'll bet 10." Sierra butted in line and spun the wheel.
"Bust..." Mira said.
"Fuck!" Sierra complained. "I'd just gotten rid of those watermelon boobs!"
Mira explained the punishment, "Sierra's breasts are now constantly producing milk, swelling as they do so."
Sierra gasped, "No. No way. I'm not some...cow!"
"You, you, you kinda are." Mira said, "Can you turn it off?" Without a man nearby she wouldn't be able to cum.
"No!" Sierra grabbed Mira's hand, "Come take your break."
Mira was **** to spend the last little bit of her game in a constant state of edging. Sierra wouldn't turn the vibe off, and she couldn't remove it. She knew there were more punishments handed out, but she barely paid any attention.
Finally her phone went off. She'd done it, all 8 hours.
Per her deal with Ken and Sierra she was able to summon the rulebook and add conditions to two of her rules.
New Rule: Mira may only orgasm when on her hands and knees or with verbal permission from a man. Permission can't be given ahead of time and she must ask in order to receive permission. This rule will be deleted after 10 unique men have given her permission.
New Rule: Mira Chowdhury's breasts will slowly start to itch when covered up. The more skin she has covered up the faster and worse the feeling will get. If she uncovers them the amount of time it takes for the itching to stop will be proportional to how long she had them covered. This rule will be deleted after 1000 unique people have seen her topless.
Mira frowned. 10 men? And 1000 people? That was too many. Far, far too many. She sighed, but at least there was a path forward. Soon she'd be free of those constraints.
Rules added:
New Rule: Sierra's breasts are now constantly producing milk, swelling as they do so.
Minor characters not included
Rules changed:
New Rule: Mira may only orgasm when on her hands and knees or with verbal permission from a man. Permission can't be given ahead of time and she must ask in order to receive permission. This rule will be deleted after 10 unique men have given her permission.
New Rule: Mira Chowdhury's breasts will slowly start to itch when covered up. The more skin she has covered up the faster and worse the feeling will get. If she uncovers them the amount of time it takes for the itching to stop will be proportional to how long she had them covered. This rule will be deleted after 1000 unique people have seen her topless.
Link to Master list:
https://docs.google.com/document/d/1MJZmTJV1sjpQHfxM_5cSnWIG1zOWLPxBADnBPfzJdLA/edit?usp=sharing
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The Rulebook
You find a Rulebook that lets you rewrite the rules any organization has to follow
A lucky protagonist stumbles across a magic book that lets them rewrite the rules.
Updated on Jun 14, 2026
by ErnestDuke
Created on Jul 27, 2017
by ashes2ashes
You can customize this story. Simply enter the following details about the main characters.
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