"Oh goodness, my knees are so weak."
Hermione was propped against the rough castle wall, somewhere outside yet secluded. Her spine was tingling and legs wobbling as she struggled to remain on her feet as Luna Lovegood relentlessly used a finger and thumb to harshly flick at Hermione's now red and swollen clit. Luna's stunning young face had a look of concentration so focused one would think she hadn't even realised another girl was there, had she not been pleasuring her. Luna was inflicting a great deal of pleasure to Hermione's shaved pussy, but there was also a factor of pain from the rough treatment that was bringing the bushy haired girl closer and closer to the edge. "Ohhhh, Luna, I'll orgasm if you keep flicking me like that." She moaned in a low voice, her eyes raised to the sky, trying to grip any party of the wall so she didn't collapse.
Luna's only response was to spit across to the pussy, cease flicking for a moment to rub the saliva in to the already soaked cunt, then started using her whole hand to slap the pussy instead. Hermione squealed in a way that made Luna's own pussy gush, and as the brunette started cumming, she started begging Luna to continue. "Ohh, oh gooooooodness that's good Luna, Luna please, oh, ohhhh, flick my clit some more, oh please Luna I'm orgasming! I'm orgasming! Flick meeeee as hard as you caaan please Luna, pleaseeee!" Her legs were shaking violently and Luna did her best to control the girl as she once again started flicking at Hermione's clit as it throbbed, her piss hole squirting fluid onto her face. Luna licked at what she could as Hermione made guttural moans before sinking onto the damp ground, exhausted, her body shaking.
Luna now started using the tip of her fingertips to tickle Hermione's soaked cunt, as she knew exactly what happened when she did this. "Luna, no, don't, please no, I don't want to, it's disgusting, Luna stoooop!" Hermione tried to protest the tickling but she was so weak after cumming she couldn't stop Luna's actions, and before she knew it she started pissing onto Luna's hand, who now had her other hand inside her robes toying with her own clit as she was pissed on. Luna smiled as Hermione pissed a long and powerful stream of weak yellowish fluid. It felt so warm across her hand and wrist, and she brought her fingers up to her own mouth to taste some. Hermione's pretty young face had turned red from embarrassment, but the piss continued to flow. "Oh, you always piss so much, Hermione. Always pissing so much after you cum!" she said excitedly, the first thing she had said in some time, after licking the last drops of piss from her hand.
Hermione now had her eyes closed and was still trembling slightly. "You should see how much I shit after I cum..." Luna suddenly announced, somewhat quietly. Hermione's brown eyes opened in shock and disgust. "I beg your pardon!" Luna responded with a little smile. "Oh, don't act so surprised. It's me, remember. And you did just piss for me, like you always do." she started giggling, rolled onto her side using Hermione's soft but wet thigh like a pillow. "Wanna see me shit now?" she asked calmly, strill stroking her clit inside her underwear. Hermione shifted awkwardly. "You must be joking. No!" she made an attempt to sit up, but Luna pushed her back down by the girls pussy, which was still so sensitive she shuddered. "My bowels are so full." she said, looking up at the brunette who was now more embarrassed than ever. "I'll shit this way, away from us both." she announced as she started to reveal her pale perfect arse, which was now pointed at an angle in their opposite direction. Hermione couldn't help but watch.
Luna began breathing slowly and sighing. Her bowels were full with shit, and emptying them was one of the most pleasurable things the blonde girl enjoyed doing. She was not ashamed of this, especially after convincing Ginny to shit herself, despite how disgusting she initially was. She knew Hermione would be much difficult to convince, so she wasn't going to bother trying to get her to shit today. Luna let out a few soft farts, before, with a groan, the first large shit started to leave her tiny arsehole. "Ohhhh, here it comes, Hermione!" she said with pleasure as she started to shit. Her arsehole made squelching noises as shit started to pour out, some solid lumps, some liquidy which ran down her arse cheek onto the floor, the smell rising up into the air. Hermione held her hand over her mouth and nose in both shock, and protection as she watched the girl defecate. The first solid shit left her arse completely and piled onto the floor, which was not joined with piss that started to leak out of her pussy. More shit continued to flow as Luna made orgasmic moans, Hermione retching with disgust. She knew Luna had a reputation for being weird, but everyone went to the girl for sex because of how amazing it always was, however no one had ever told her about her shit fetish. Ginny hadn't mentioned it when they last talked about their sex in Myrtle's bathroom. She was too shocked to even move.
Luna kept her eyes on Hermione's as she shit more and more, frantically pulling and twisting her own clit. "I always cum when I shit, and I always shit after I cum." she spoke softly, breathing heavily, as a small orgasm erupted in her. As her pussy twitched and came, her arse made disgusting sounds as she started violently shitting, all over her legs and the ground behind her. She had no piss left, but the smell was overwhelming and Hermione couldn't contain herself. "I'm going to throw up! Luna, move, quick!" she struggled to get up, her legs still weak, and Luna held her down. "Puke, then. I wanna see." She giggled watched Hermione struggle as tears formed in her eyes. Due to the angle she couldn't move her neck and had no choice but to puke onto herself and Luna. She dry heaved a few times then, edged on by the smell and situation, puked twice into Luna's waiting mouth and on her own clothed chest. Luna licked her lips and swallowed what she could as the last shit left her bowel.
Disgusted in both herself and Luna, Hermione finally gathered enough strength to push the girl off, forcing Luna's arse onto her pile of shit, which squelched beneath her. Luna was now covered in piss, shit and vomit, causing her to start rubbing at her pussy in frenzy, failing to care that Hermione had now dressed herself properly and left, sobbing quietly to herself. "I'm so disgusting, so filthy," she was close to cumming already, and scooping a handful of her shit and smearing it across her face sent her over the edge, with a loud scream her little tight pussy exploded into orgasm in her underwear, soaking her even more. She was breathing heavily as she now ate her own shit just for the fun of it. After a minute of feasting, she puked onto herself, then fell backwards in delight, wondering if Professor Umbridge had been watching, and just how she would punish the girl if she was.