I don't own Harry Potter, just this story which has been in my mind for a while now.
Please let me know what you think.
X
Sex Night.
Holly moaned with need as her eyes rolled into the back of her head. She was lying on her bed, naked and covered in a fine sheen of sweat, her legs spread wide. Whenever she looked around the rest of her dorm, she saw that her friends were in a similar state; Pansy was openly masturbating with her curtains drawn so everyone could see, one hand was squeezing her full breasts, and the fingers on her other hand were slipping in and out of her pussy.
Millicent's massive fingers had disappeared with a wet squelch into her own cunt, thrusting them in and out, whining and squealing. Lily Moon was in a similar state, squeezing her nipples and squealing and moaning. Even Daphne, who'd built up a reputation for the last two years of being schooled at Hogwarts as the Ice Queen, was eagerly snogging Tracy and they were both fondling each other, their clothes removed. None of the girls cared, they all knew what they were doing, and they loved it.
"Wha-what's happening to us?" Holly panted.
"I-I don't….know, Holly!" Daphne gasped.
"It…feels great, though," Tracy said through muffled and busy lips as she switched her attention to Daphne's breasts.
The sheer pleasure she was feeling and the fact her brain was being fogged by desire, by need, was making it incredibly hard for Holly to concentrate and she wasn't able to use her occlumency barriers to cut through what she was feeling to make sense of what was going on. All day she and her friends in Pansy's gang had been feeling odd. And they were not the only ones; all the others in their year had been struggling to maintain their self-control. More than once Holly had caught the wandering looks from Nott, Malfoy, and Zabini. She knew what those looks meant, seeing as she'd seen them at the club where she'd celebrated turning thirteen in a way she would never have been able to, not after she had left the Dursleys when she was a young girl before finding a flat belonging to her mother in London where Lily had lived in for a year, getting a job as a waitress while she was studying for her masteries.
But Holly knew moving out was a godsend. From what she had learnt her mother had wanted to get away from Petunia, and Holly could not blame her; after spending a few years in that bloody cupboard, Holly had wanted to bugger off herself.
Holly had been thankful to find the place after coming into the magical world. She had moved into the place, done it up and she had lived there since. And she was happy about that. She had hated living on the streets, and suffering in the cold, which was why she'd gone into foster care, but she had become tired of the adoption process and when the Hogwarts letter came, it had offered her a way out and she had been taking advantage of it ever since, and thanks to the money her grandparents had left Lily, who had invested in different properties, Holly had a nice and steady income, especially since Lily had the brains and common sense to make sure Holly inherited it all.
In the summer before her current year at Hogwarts, Holly had lost her virginity as a celebration, and more than once she had caught the look of lust from dozens of boys and men alike. She had gone to a sex club and she had used magic to con her way inside, and it wasn't long before she lost her virginity. But Holly hadn't expected to get the look openly in Hogwarts, and she wondered what magic was being used on her and her friends, to say nothing about the rest of her year. She had noticed their distraction all day.
Looks were not enough.
More than once, Holly and a few of the other girls had been fondled by the boys.
"Could the Weasley twins be doing this?" Pansy gasped.
"N-No, they can't," Holly whimpered as she squeezed her boob a bit too hard. "The Weasels always throw humiliating pranks at us; changing our robe colours, stuff like that. They don't have the imagination to pull something like this off," she added for the benefit of the rest of their gang.
"How…can you so…sure?" Daphne whimpered as she managed to finger herself to orgasm.
"If they had the brains for something like this, they'd have pulled it off by now," Holly explained.
The door opened and the girls looked up, but they were too wired to stop masturbating or having sex to stop. In the doorway stood a Slytherin girl from one of the upper years - Holly vaguely recognised her, but she was too brain fogged to properly put a name to the face. But even Holly was surprised by the girl.
She was naked, her full tits were heaving up and down, and in the hallway outside the dorm doorway, Holly could see several girls walking past, just as naked as the girls in the dorm doorway. The girl smirked in amusement as she took in the scene. "Merlin, I love Sex Night," she said, fingering her own cunt, "anyway, you guys need to come with us."
"Who's us?" Tracy asked, breathlessly and absently massaging her tits.
"Why, everyone in the house, of course. We're having a sex night, with lots of yummy-yummy cocks and juicy pussies to fuck," the girl's smirk took on a wicked grin, "So, you guys interested?"
"Hell, yeah," Pansy held up her cum covered hand.
"Me too," Daphne grinned.
Holly smiled and stood up, shivering as her blood travelled to her legs once more. "What're we waiting for?"
The third-year snake girls left the dorm and they followed the older girl out of the room, and down the steps to the common room. As they left, Holly's fogged mind noted there were other Slytherin girls who were giggling and even exchanging hot lesbian kisses with each other. When she and her friends got to the common room, Holly's eyes went wide as she took in the sight of so many naked Slytherin students, and as she stepped in through the doorway, her nostrils were assaulted by the mix of sweat and sex. She took in the sounds and she heard the sounds of moans, groans, grunts and screams of pleasure. It was a full-blown orgy. The tables and chairs in the common room were gone, replaced by large armchairs and sofas which the students used to fuck each other on. Girls were riding boys, moaning and groaning with bliss, throwing their heads back as they panted in wanton pleasure. There were lesbians locked in passionate sex as they rubbed their cunts against each other.
Watching the lesbians fascinated, Holly walked around the edge, biting her lip as she absently began fingering her pussy and hefting her breast as she struggled to think about where she should go now when she caught sight of Blaise Zabini and Draco Malfoy. Both of them had finished fucking a girl who looked like she was in her fourth year, and now they were staring at her in lust, the gazes which had been roving her body earlier today were fixing on her boobs and her cunt.
Holly stared at them back with undisguised lust, gazing at the hardening cocks. Throwing her chest out, Holly walked over to them, her tits heaving and swinging her hips as she smiled coyly and invitingly at them. When she got to them, Holly wrapped her arm around both boys, and she pulled them to her lips and kissed them.
