Hermione X Ginny Omorashi

The Gryffindor common room - 4k

Hermione and Ginny were alone in the Gryffindor common room, pouring over a set of books they'd borrowed from the library in preparation for Ginny's upcoming exams. They'd been there for a while now, their studying fueled by kind gifts of Butterbeer and hot chocolate from the house elves and altogether it had been a very pleasant, comfortable evening.

However, nearing the end of their fourth hour, Ginny noticed that Hermione was starting to get fussy, bunching up her skirt nervously in her hands, rocking back and forth slightly and grinding herself against her heel. She smirked behind her copy of most potente potions, recognizing the signs of someone desperate for the toilet, but too prudent to say. Eager to goad her on and fuel her own sexual fantasies, Ginny reached for her pint of pale, amber-coloured liquid and took a long, thoughtful sip.

"After we've finished these chapters," she announced nonchalantly, "I think we can go for dinner, if that's alright with you."

"Yes!" Hermione replied, a little too quickly to feel natural. She realised this and blushed, biting her lip slightly as another wave of urgency passed over her. She knew for a fact that they would have to wait until dinner until she could relieve herself- the toilets in their common room were out of order, meaning only the ones outside the Great Hall would be open. She had been warned by Pavarti that Lavender would be making a move on Ron, and since their bedroom was on the way to their bathroom, she couldn't risk it, not again. Hopefully, the next chapter would be short.

However, as Ginny had planned, it wasn't. Twenty minutes later, they were still going, albeit a little slower than usual- Hermione kept breaking off to check she hadn't leaked, or to look up and around the room in desperation, unable to concentrate. Ginny, meanwhile, was doing everything in her power not to touch herself either, and her thoughts were as far as they could be away from Snape's upcoming assignment. 

"Are you nearly finished?" Hermione asked in an unnaturally high voice, tilting backwards slightly and instantly regretting it as she stretched the already tight skin over her bladder, causing it to complain bitterly. "I... I, er..."

"Need the loo?" asked Ginny plainly, pretending not to have noticed. "Yes, I do too, a bit, I've had quite a bit to drink. Still, we'll be fine until the end of the chapter, I'm nearly done now."

"You said that ten minutes ago," she whined, giving up all pretences and punching both hands down her skirt and hugging herself tightly. Ginny raised her eyebrows and returned to the page she'd already scanned about six times. Suddenly, something happened, something that made Hermione freeze and her face go pale. Desperately trying to hide her actions from the red-haired teen, she propped the book in front of her lap and felt the outside of her underwear with a sly finger, noting that it was definitely damper than before, warmer too. Her need to urinate was, if possible, ten times stronger. 

"Gin, I'm going to wet myself," she gasped. The way she sat, with her hand desperately holding her crotch, meant that Ginny got a full view of Hermione's damp panties, which had a thin, but unmissable dark streak down the front, clearly from a leak of urine. "I can't wait, I can't, I'm... I'm going to piss myself, I swear."

"What do you mean?" she replied idly, turning the page. "Are you serious?"

"Yes, yes I-" she fumbled with her words, as another dribble of hot pee trickled down, this time feeling it through her sock as well, which was crammed into her to try and prevent the inevitable. "I've leaked, twice now, I don't think I'll make it!"

"What, you won't make it down a few flights of stairs?"

She shook her head desperately in reply, giving up entirely on hiding her condition and opening her legs to show Ginny the now pronounced wet spot, unusually unabashed for the prim headgirl. As she watched, it grew shiny and darker again as Hermione whimpered. A thick, audible jet shot out and Ginny almost came.