Being Yuuko is suffering (Nichijou)
She needed to pee. She needed to pee! Class wasn't anywhere close to finished yet and Yuuko desperately needed to pee!
The brunette sat in her seat, squirming like crazy and occasionally holding herself, all while letting out soft, pitiful whines. Class was going on like usual in the background, but there was no way that she could pay any attention to Takasaki's teachings... which, honestly, wasn't much different from her usual school performance, so Yuuko wasn't too worried about that.
What she was worried about was having a big accident, right here, in her own school. Oh, it would be so humiliating and her classmates would surely whisper about this for months or even years to come! Not to mention what her mom's reaction would be...
There was no choice. She had to ask the teacher for a bathroom break. Yuuko, so far, had refused to do it, but now she was willing to swallow down her pride.
"Excuse me, Takas-" "Denied!"
Huh?! Yuuko froze up at the sudden, authoritative tone. The teacher went on, in a truly passionate speech.
"Math is a delicate science! Everything in this world is made from math. This table here is made from math. This cup is made from math. I'm made from math! And if you wanna learn all the intricate secrets of math, you can not close your eyes and ears off for one measly second. The math gods won't allow it!"
"But... I just wanted to go to the bath-" "Denied!!"
Damn. Well, so much for that option. Yuuko sat back down, defeated.
In an effort to distract herself from her own need, her gaze soon roamed around the classroom, until it stopped at Nano's table. Yuuko blinked.
Nano was shivering, the key on her back turning around and around like crazy. She was also urgently pressing her legs together. Did... she need to pee, as well? Well, at least Yuuko wasn't alone in her suffering, for what it's worth...
A high-pitched whine suddenly came out of the robot girl, kind of like a tea kettle, and before anyone could react, a comically massive jet of yellow pee blasted out of Nano, immediately launching her up... straight through the ceiling.
Yuuko looked at the giant hole left behind in both shock and awe, her eyes the size of saucers. Then she frantically looked around the classroom. No one gave any reaction to this. What the hell?!
"You guys, did you not see this just now?! Nano just flew away!! She just went up like that, I-I don't even know where she landed, I think we should go find her and make sure that she-"
Her panicked rambling and gesturing was suddenly interrupted by the sound of a toilet flushing. Looking over to her side she could see her classmate Mai, studying diligently and with a neutral expression, all while loudly relieving herself into a toilet.
...Wait, how did Mai switch out her chair with a toilet?
That question was irrelevant though. The more important question was how could Yuuko possibly hold on to her control, when Mai was making all these satisfying hissing and splashing noises?
The answer was: Not well.
Her barrier was already breaking, bit by bit, as the first few leaks escaped her, warming her crotch. Yuuko squeezed her eyes shut in desperation.
Oh god, she was gonna wet herself! Any second now she was gonna wet herself and make a giant mess...
"Yuuko, what's wrong? What's with the face?" Mio whispered, after noticing her friend's obvious discomfort. Yuuko all but groaned out her answer, as she held on to her table for dear life, her face beet-red.
"I'm gonna pee myself... I-... I can't hold it back, anymore."
"Then just do it. I don't see the problem here." Mio sighed, not understanding Yuuko's apprehension.
"But... I'm gonna make a mess..."
Another sigh from Mio.
"It will be fine. The diaper should absorb everything."
...The what?
Yuuko checked herself and, sure enough, she was wearing one. Now she was thoroughly confused, wondering where the hell it even came from. She was fairly certain, after all, that she had been wearing her regular panties, when she left her house this morning.
Her barrier broke more and she began to openly dribble now. Deciding not to question her good luck Yuuko made good use of her diaper, by giving her aching bladder a big push.
Loud hissing filled the classroom, even drowning out Takasaki's voice. Everyone's eyes were on the brunette, as she loudly moaned, the pressure inside her draining away and her diaper filling up with warm, wet relief.
It felt so good to just let go. Even the audience watching her strangely didn't bother her anymore. And even when her diaper overflowed, unable to hold it all, and her piss audibly splattered down on the ground, did Yuuko not slow down in the slightest.
Even Mio's sudden shouting and shaking of her shoulders didn't deter her. No, Yuuko was in heaven and she was not gonna stop, until every last drop had left her body...
On a silent, peaceful night, in the middle of the forest, two girls were still talking to each other, while sitting in their tent.
"...right into my face! You could bet that I was pissed off, after that! I swear, my sister is just so-" The blue-haired girl suddenly interrupted her own rambling, her curious gaze moving over to her side.
Mai, who had been wordlessly lending Mio her ear, also looked over.
Yuuko was tossing and turning in her sleeping bag, her sleeping face sweating and distorting in sudden distress... A nightmare?
Just as Mio was about to touch Yuuko's shoulder, to shake her friend out of her sleep, Yuuko's entire body went limp again and a happy, relieved smile settled down on her lips.
Two seconds later the hissing started.
Both friends froze up, their shocked gazes simultaneously going down, towards Yuuko's crotch area. Sure enough, a puddle began to quickly form on the ground, right underneath her butt, as her sleeping bag couldn't contain all of her yellow deluge.
Mio immediately grabbed Yuuko's shoulders, shaking her like crazy.
"Yuuko, you dummy, wake up! Wake. up!! You're peeing! Right in our tent!"
But the oblivious girl wasn't waking up, too lost in her dream, as she blissfully flooded her own sleeping bag - as well as the rest of the tent.
The puddle rapidly grew in size, soon reaching Mio's and Mai's sleeping bags and staining them, as well. Mio groaned loudly in defeat.
"I can't believe this... Why, just why, didn't she go pee first, before going to sleep? Yuuko, you are such a moron!!"
Mai just stared at this scene in trained indifference, before slowly getting up, opening her giant backpack and pulling out a spare blanket for herself. Her friend looked at it in envy.
"Hey, do you think this blanket has enough space for both of us?"
Mai thought about saying no, like she normally would. But then her gaze went to Yuuko's massive puddle, which was still growing, and she had a change of heart.
"...Sure."
Both girls slept close together that night, on the far, dry end of the tent. Meanwhile Yuuko slept like a baby, wet and happy and having sweet, peaceful dreams about school...