Harui, a shy and innocent schoolgirl, had been feeling rather constipated lately. Ever since she started her new diet to lose weight, her bowel movements had been erratic, causing occasional discomfort. Today, however, was an exception. She had consumed a large amount of fiber-rich food and plenty of fluids, and it seemed like everything was flowing smoothly.
As the school day progressed, Harui found herself growing increasingly uncomfortable in her swollen belly. She constantly shifted from side to side on her seat, trying to find a comfortable position. Her cheeks reddened whenever someone commented on how "full" she looked recently. Even during gym class, she couldn't help but worry about the inevitable happening.
Finally, the bell rang signifying the end of school. Harui practically sprinted to the bathroom, not even bothering to change out of her school uniform. She locked the door behind her and rushed towards the toilet, her heart racing with anticipation. She barely managed to lower her school skirt before the feeling hit her - a massive, loud, and messy fart exploded from her behind followed by a steady stream of diarrhea filling the toilet bowl.
Harui let out a small yelp of surprise at the force of her own excrement. It was big, sloppy, and covered the water completely with its descent. Relief washed over her as she finally emptied her bowels, but there was no time to savor success. The quantity of her defecation caught up with her, and she struggled to maintain balance on the small toilet seat. Her heart pounded in her chest as she tried to suppress the urge to scream or make any noise, afraid that someone might hear her predicament.
As the last bits of her poop slipped into the toilet, she took a moment to catch her breath. Her legs were shaking, and she felt an ounce of embarrassment creeping up on her. She took a deep breath and slowly lifted the toilet seat, revealing the horrifying sight of her mess. But instead of flushing, she sat back on the toilet, admiring the smelly bouquet in front of her.
Harui couldn't believe what she was doing; she had never acted on these obscure urges before. Her fingers gently traced the soggy lines left by her feces, marveling at its texture and consistency. She let out a heavy sigh deep from within her chest, her cheeks still flushed with shame. But then something overcame her - curiosity maybe? Or perhaps it was something else entirely.
She leaned forward, her soft breasts grazing against the cool porcelain of the toilet bowl, and brought her messy hands up to her mouth. She tentatively dipped a finger into the mix of feces and urine, tasting its salty metallic flavor. It was disgusting, yet strangely arousing. She let out a moan of pleasure as she slowly started to indulge herself further, slipping two fingers into the warm mess.
Harui reached back and spread her soiled butt cheeks wide, marveling at the sight of her own anus, still glistening from the exertion. With a shaky hand, she rubbed a dollop of her poop over her tiny pink anus, sighing at the sensation it created. She spread it around, coating her skin in a thin layer of fecal matter. Her body trembled with excitement as she reached for more, fully submerging her hands in the repulsive mixture once again.
She continued to explore herself, unable to believe what she was doing but helpless to stop. Her mind felt clouded, almost as if it wasn't her own. She scooped up some of the remnants and started smearing them on her inner thighs, moaning softly at the newfound pleasure. Her breath came in short gasps as she slid two fingers back inside her lubricated asshole, filling herself once more with the sticky warmth.
Her climax came suddenly and powerfully, shockwaves of ecstasy radiating throughout her body. She cried out, unable to contain herself, and collapsed onto the toilet seat, covered in a thin layer of her own waste. Tears of both shame and joy trickled down her cheeks as she sat there, catching her breath. She couldn't believe what she had just done - and yet, at the same time, she couldn't wait to do it again.