Persona 4 Regression ULTIMAX Part 10 (Patreon)

Yukiko cheerfully hummed to herself atop the training potty, her feet performing happy little kicks in rhythm with her humming.

She was comfortable and unbothered, the idea of a sunny little smiley face potty sticker was in her sights along with an affirming head pat from Ms. Nami. She was completely oblivious to the fact that, while she’d been smart enough to unbutton the snap crotch of her outfit, she’d completely forgotten one major step: pulling down her diaper.

Beside her Ms. Nami and Rise chuckled at this, not bothering to correct her on the mistake. Chie’s mouth fell open, unable to believe her friend could be so neglectful and that the other two had planned to say nothing to her.

Yukiko sat there for several minutes, having jumped on the potty without needing to. While Chie stood behind her, attempting to conjure up her urge to pee so she could earn a sticker, Yukiko was doing the same and basically wasting valuable time on the training potty.

Ironically, while Yukiko was struggling to push her bladder to its limit and force herself to pee, Chie was the opposite. As soon as she tightened the muscles in her abdomen, applying just the slightest pressure to her bladder, the urge to pee returned.

It was like she’d turned on an invisible faucet and filled her bladder to the brim magically with just that abdominal twitch. She had to switch gears at lightning speed, contracting her urethral muscles to keep from peeing herself on the spot.

She crossed her legs, hoping the external twisting would keep her from flooding the wrong receptacle with her unfortunate fullness.

“Yu-Yukiko, please hurry!” Chie begged, “I’ve really got—ngh—gotta go!”

The strain in her voice was audible. Chie hadn’t meant to sound so desperate, but she was speaking through gritted teeth and her tone rose and fell on each word due to her bouncy little potty dance. She was sure that half of Ms. Nami and Rise’s snickers were now also aimed at her given just how much of a fool she was making of herself.

Yukiko turned her attention up to Chie with a pout. “I’m trying Chie-chan, wait your turn!” As if trying to prove that yes, she was in fact trying, she scrunched her face, adding to the illusion that she was doing something.

“Not that it matters,” Chie thought, staring at the back padding of the white diaper that was scrunched over the top of the potty, “she’s going to pee herself like a baby anyway!”

Before she could voice that concern, Rise spoke up beside Chie, interrupting her train of thought. She could only have one going at a time after all, given that the rest of her attention was devoted to keeping her pants dry. “Yeah Chie-chan, wait your turn! What’s wrong? Can’t you keep from peeing yourself for more than a couple of minutes?”

Chie blushed at this and glared back at Rise after the snide remark. It was easy for her to say, she’d not had to wait, in fact, she was the first one on the potty while Chie hadn’t even been aware using it was an option.

In defiance Chie threw her arms out to gesture towards Yukiko, her brow furrowing. “Yuki-chan is still in her diaper!” she yelled, “She’s not even using it right!”

Ms. Nami’s expression suddenly became serious, with her scowl aimed directly at the sandy-haired girl. “We all start somewhere Chie, if that’s how Yukiko learns to use the potty then so be it. That doesn’t mean you don’t have to wait your turn. If you continue to act like an entitled brat you’ll find yourself dealing with something much worse than time in the corner.”

The amount of malice within the woman’s gaze was already enough to silence Chie’s complaints, but when paired with the threatening words she shivered. No part of her wanted to experience what was worse than Corner Time, so she decided to wait patiently, though not without a pout.

Yukiko looked down to see that Chie was correct and gasped in surprise: she hadn’t even noticed that the padding was still tightly wrapped around her waist or the way it scrunched against her bottom given how compressed it was by the seat of the training potty.

She moved to pull her nappy down, or to at least open up the seat for somebody who needed it more, but a sudden burst of flatulence and a cramp in her stomach stopped her. Yukiko hardly managed to move an inch, having struggled to free her diaper from the clutches of the training potty from how jammed in there it was. The cramp sent her tumbling back down, scrunching her padding into the plastic shell more.

All of Yukiko’s straining was finally being rewarded, but by no means was it going as intended. The peppy girl’s expertise at potty training began with seeing a potty and ended with sitting down on it.  Even just noticing any urge to relieve herself was typically beyond her, let alone controlling one. She might have loaded the ammunition, but her body was holding the trigger and would empty itself on its terms, not hers.

*Splortch*

With a sound reminiscent of an angel falling from the heavens and landing butt-first in mud, a second convulsion in Yukiko’s bowels deluged the beginning of a stinking mess into the back of her diaper, promptly sagging heavily and dipping the seat of the plastic shell into the pool of pungent urine that Rise had left behind.

Yukiko bore down, gripping the sides of the training potty as the seat of her diaper sagged lower into the plastic seat. The rhythmic squelch of her body depositing one wave after another into the seat mixed with the sloshing sounds of the liquid inside the potty and Yukiko’s grunts of exertion.

Chie watched from behind as the portion of padding that stuck up from the seat of the training potty shifted and pulled, trying to follow the rest of the diaper’s downward trajectory.

Already feeling her control waning and with no idea how long Yukiko would need on the potty, she let out a defeated sigh before embarrassingly releasing her hold on her bladder.

Her own diaper sagged in tandem with her friend’s as the front grew dark and heavy.