[Humiliation, Soiling, Pantypooping]

"Today, my youth ends..."

Aihara Yuzu, a natural gyaru who loved to express herself through the way she dressed, muttered to herself as she looked upon her brand new school. She had been fooling around a lot while climbing through the grades, bonding with the other girls that had managed to find an appropriate partner...

But she was the only one that hadn't. And to fit in, she had lied every step of the way. They bought it wholesale, and yet she couldn't help but feel isolated as a result of all her lies. It was something that she had to live with. Every time she looked at the messages she got from her friends, she'd be reminded of the fact.

She couldn't even really understand what love was. No matter how much the others talked about it, she couldn't really feel the same way that they did. It was something that frustrated her. But it really didn't matter at this point. Because there was no way that she was going to get a boyfriend while studying at an all-girls school.

At least her makeup and her personal expression was still on point. Makeup great, hair done in just the right way, she felt like she could take on the world. Despite the worries that still filled her heart. Well, better just-

Yuzu grimaced as soon as she took a single step into the school grounds. Her stomach was growling. R-Right. Because she had been so worried about the transfer, she hadn't been able to poop. And she had been worrying for three whole days. But now that she was trying to come to terms with her nervous feelings, that's when her stomach decided that it was time to try and push it all out? Come on, that wasn't fair at all!

"Excuse me."

An unremarkable looking student with an armband approached Yuzu, who did her very best to remain composed despite her stomach doing a remarkable job at making her feel all sorts of uncomfortable. "Mm..? Wh-What's up?" She said, a few droplets of sweat running down her face. Crap, she probably looked awful...

"You're in violation of several school rules." The unremarkable girl said, her eyes hidden behind her glasses. Honestly, Yuzu wasn't really listening to what she was saying. She was more focused on the gaze behind those glasses. Or rather, the way it was definitely focused on her awkward posture and... G-God, couldn't she just look somewhere else? "...Are you listening?"

"Y-Yeah." Yuzu muttered, shaking her head a little. "L-Look, I just arrived, it's not like I know the rules." She said, clapping her hands together and bowing her head apologetically. "Can't you just let it slide? I'll be good from tomorrow on, promise!" She could definitely give her that chance. Right? Right???

The bespectacled student stared at Yuzu for a few seconds before pushing up her glasses. "No exceptions. Please give me your name, I need to write down every single rule that you've violated. You'll be lucky if you end up in detention, since you stand out so much." She was ruthless, despite the fact she looked nearly like everyone else...

Yuzu's stomach was still throwing a fit, causing her to stagger slightly. "J-Just how many rules did I break? I-I didn't think I could break that many in such a short time..." As much as she wanted to get this over with so she could deal with her stomach, she still wanted to understand what she had done wrong.

"Your uniform is improper, not to mention how much skin you're showing on top of it. You're wearing unauthorized accessories, the makeup you're wearing is banned thrice over, and-"

"What?!"

Yuzu didn't let the bespectacled student finish, the sensation inside her stomach nowhere near as pressing compared to the way the girl tried to stamp out her freedom of expression. "What's so wrong about the way I dress?! It's not like it'll make my grades worse! Who's the crazy control freak who made these rules, and why do they hate fun so much!?" She shouted, drawing way too much attention towards her while she grabbed ahold of the student and shook her around.

"P-Please stop shaking me!" The student cried out, her glasses nearly falling off. "T-The rules are for your own good! You'll be better off following them!" She was strictly adhering to the rules. Even though those very same rules were the reason why she was currently being assaulted.

Murmuring started to echo around Yuzu, as she realized what she was doing. 'Crap, I just made a scene, didn't I?' She thought to herself, though she really couldn't help herself. She loved dressing up like this, so to have them all judge her like this... It... It...

Her cramping stomach proceeded to growl once more, which nearly caused Yuzu to fall onto her knees from how strong it was. 'Don't look at me like that... Y-You're all going to make this so much worse..!' She thought as her eyes darted all over the place. It was one thing to have her freedom taken from her, but to have them all watch as she did something horrible... It was going to make it all so much worse.

"The rules are for your own good. They're there to prepare you for society. And they affect all of us. So if you want to go to this school, you will have to abide by the regulations."

A sharp voice cut through the murmuring, as the crowd of gathered students quickly shuffled out of the way. Yuzu even let go of the girl that she had been shaking, before turning her attention towards the new arrival.

"S-Student Council President...!"

The roughed-up student said as she quickly retreated to the crowd, leaving Yuzu in the middle with no way to escape. All while her attention was completely and utterly focused on that very same President...

Just looking at her was enough to make Yuzu's stomach turn. She was... She was just as bad as the other girl. But she carried herself in a much more stern and authoritarian way. It's like she was a living embodiment of the rules she spoke of... Those judging rules that she still didn't know anything about.

She could accept her punishment and accept that she was at fault. Then perhaps the rules would go easy on her. But that's not the kind of girl that Yuzu was. Even with her stomach trying to throw a fit from her inability to poop catching up with her, she wasn't going to stand down when faced with something so blatantly wrong.

"How was I supposed to know about those rules?" Yuzu said, taking a weak step in the black-haired President's direction. "I can't follow the same rules as all of you, unless I actually know what those rules are. So how can you say they affect all of us, if there's no way I could've known?"

The President stared straight at Yuzu, remaining calm without looking like she had been hurt by those words. And yet that silence also gave Yuzu confidence. "...Guess you agree, then." Yuzu muttered, as she tried to walk past her. If everything was okay, then-

Yuzu's eyes widened as she suddenly felt a hand firmly grasp her rear, and another hand worming its way into her uniform. All while she came face to face with that President once more. She... W-What was she? She was going to go this far, just because she had to follow those stupid rules?! Couldn't she at least have said something?!

Her eyes widened a little further as all of a sudden, it was like the pressure inside her stomach had vanished. Which could only mean one thing. No. No no no. There was no way that she had... T-There was... There...

The President carefully dressed the young blonde down, only to notice the subtle trace of tears running down her cheeks. And as she did, she swore she could hear her whispering something. What was she saying..?

"D-Don't... Don't find out..."

Don't find out? What was she hiding exactly? Just how many rules had this girl broken? Perhaps if she assessed the damage a bit more, she'd...

This time, it was the black-haired President's turn to have her eyes widen. She felt something thick pressing up against her fingertips. And upon squeezing, she could very audibly hear a squelch. As if she had just squished some mildly wet clay. But why would she have clay down there?

The President wasn't stupid. She knew exactly what that was. And the fact she could feel some of it pushing into the palm of her hand as she could barely make out the blonde's sobs only served to confirm it. That girl...

She had really just shit herself, right in front of the President... And yet, she didn't feel disgusted. No, the President would better describe her current feeling as.. Intrigued. Why was that the kind of emotion running through her? She couldn't say for sure. All that she could say was that she was beyond curious.

"I'll be confiscating this." The President said, thinking quickly as she pulled out Yuzu's hidden phone. Not that the girl really focused on what she had done. "And I will be personally lecturing you about all the rules that you've neglected to study up on. For your own good. Come along."

Yuzu couldn't really hear what the girl was telling her. But she understood when she had to follow. Even with the slight tears running down her cheeks, she knew when she had to take somebody's hand. And with her mess pushing up against her rear, with the subtle stink of her horrid filth wafting around, she couldn't help but feel utterly miserable...

She had just shit herself. Not even a little either. She had shit herself so much that the President had gotten a good handful of it. How could she ever recover from something like that? For that matter, how could she explain it all to her mom? What was she going to think once she found the big brown stain in her expensive panties..?!

All of those thoughts drifted around inside her head, making it impossible for her to notice that she had essentially been rescued from the crowd. Sure, she was alone with the one person that had managed to find out that she shat herself... But at the same time, she was safe from the ridicule that would come with everyone else discovering it.

"Stop crying." The President said, locking the door to the bathroom. She never thought that she would be using her key in this manner, but she didn't dwell on it for long. What mattered was the girl that had shit herself. "I can't lecture you while your panties are still filled like this. Lie down, and I'll wipe you clean."

"Y-Yeah, r-right. Y-You're probably just going to rub it in." Yuzu muttered, not about to trust a girl that was so intent on following the rules. As she wiped away the tears slightly, all she could do was glare at the President. That girl... She wasn't going to listen to her.

The President looked at Yuzu one more time, before taking matters into her own hands. "If you're going to be a Naughty Girl, then I'll treat you like a Naughty Girl." She said, using that same stern tone while at the same time grabbing ahold of Yuzu and forcing her to lie down.

Yuzu was surprised to find that the girl was this strong. Or was it because she was weak? Either way, she ended up on the tiled floor within seconds, a blush forcing its way onto her cheeks. Something about the way that the President held her must've made her feel this way. Or maybe it was being called a Naughty Girl. She wasn't sure. She wasn't sure about anything...

"Lift your legs." The President said, and this time... This time, Yuzu actually listened. Which prompted a small smile to work its way onto the black-haired girl's lips. "Good Girl." She said, reaching underneath the blonde's skirt to grab ahold of those extra messy panties...

Yuzu didn't understand why it felt good to be called a Good Girl. Especially when the one that called her a Good Girl was the very same girl that found out that she had shit herself. But it did feel... It did feel nice. Really nice, even. So much so that-

Her eyes widened as she blushed a little further, and the subtle sound of a fart left her rear. While the smell was mostly drowned out by the much stinkier mess, one could definitely still hear it. And not much longer after that, a few more inches of pure filth stacked into her panties, something that was completely impossible to miss if you were looking straight at her panties.

Which the President was. "Naughty Girl." She said, as she pressed the mess up against the girl's rear in response to her unintentional mess. "Next time you feel you're about to go, tell me. That is one of the rules that you'll have to follow from now on. Am I clear?"

"Y-yes..." Yuzu muttered, only to let out a single moan as she felt something throb between her thighs. W-What had she done? What had that girl done? She couldn't tell, all she could see was the subtle smile on the girl's face. It creeped her out...

"Good Girl."

And so did that title. It felt good. It felt awful. It felt rewarding. It felt demeaning. There were so many simultaneous emotions rushing through her to the point where she couldn't tell any of them apart. All she could do was just stew in them and quietly hope that she wouldn't tease her for much longer than necessary.

The President smiled. Not only did the girl mess herself through some form of accident, but she didn't know what it meant to pleasure somebody. Adorable. Had she awoken a secret side inside her? Perhaps. Either way, she was enjoying the control she had over her. Far too much.

For now, she gave the Good Girl a bit of a break. She helped her remove her panties, dumping the contents into the nearby toilets before washing them and wringing them dry. It's not like she had a fresh pair on hand, so she did what she could. All while keeping an eye on the blonde. "You're not going to make another mess, are you, Yuzu?"

"N-No. I'm... W-Wait, how do you know my name?" Yuzu asked. She had never met her before. So how was the President able to know her name? What had she found out about her? Was this all a setup? Now she was agitated again, and-

The President put a finger to the girl's lips. "You'll find out." She said, before gently bowing her head. "From now on, you are to call me President. Whenever you need me to help you out. Whether with following the other rules... Or whenever you need help like this again. Am I clear?"

"...Y-Yes, President." Yuzu didn't want to test her luck. And her compliance earned her another reward, in the form of the President very thoroughly rubbing away all the messy poop still stuck to her rear.

All while those words slipped through her ears once again. "Good Girl." Was she really so weak that she would mewl and roll over in response to this kind of praise? It definitely seemed that way at the moment. But it's not like she had anything else she could do. The President had so much blackmail from the short time they spent together...

The President smiled once she had cleaned Yuzu up completely. And although she helped her put her panties back on, she made a point to visibly pocket the blonde's cellphone. "For the time being, I will be keeping this. Until I can trust that you can follow the rules, you may only use this in my presence. Am I clear?"

"Yes, President..." Yuzu narrowed her eyes as she slowly got back up. "Can't I have an actual name..?" She muttered under her breath. It was beyond humiliating to keep calling her by this title...

"Whispering about your grievances is not going to earn you any favors, Naughty Girl." The President said, causing Yuzu to jolt and shiver. "Run along. You'll be late for class if you stick around."

Yuzu wanted to huff and pout. But instead, she decided that it would be best to just head to class. She had spent way too much time here. And she wanted to forget everything about her accident, and the encounter, and everything. Surely this was all just some elaborate and terrible dream that came about due to her worries, right..?

That's what she thought, at least. All while hoping she would eventually wake up...

---

"Nice to meet you. I am Aihara Shou's daughter, Aihara Mei. I will be in your care."

Unfortunately, she wasn't dreaming. And she was in for a very rude awakening, as she met the President back at home. Where she revealed the truth of why she knew her name.

Yuzu's mother had remarried. And as a result, the President... No, Mei was now her 'little sister'. Just staring at the black-haired girl that had tormented her and helped her in equal measures was enough to make her sweat.

And as Yuzu's mother left them to be on their own, Mei took a single step towards her, and wrapped her arm around her. Grabbing ahold of her rear, just as she had done before. Staring straight into her eyes. All while subtly smiling like she had done before. Singlehandedly making Yuzu's belly start making noise once again...

"You're clean. Good Girl."

Those words made Yuzu's heart slam against her chest. As she became dreadfully aware of what hell she had just wandered into.

And what control Mei now held over her...