"FINALLY!" Ibuki cried as she entered her dorm room, not noticing the door was unlocked. She'd only made it a single step inside before she shut the door and began to strip.

It had been a long and annoying day. Her classmates had been whispering and looking in her direction all day, and while usually that kind of stuff didn't bother her, this time…for some reason, it had been different.

On top of that, once classes had been done, one of the first years had stopped her on her way to her room, the cute one named Chihiro. Ibuki couldn't remember if the kid was a boy or girl, and they certainly didn't make it easy, but she was pretty sure he was a boy. Nevertheless she'd followed him around since Chihiro had needed help finding a spare part from his computer. Only to have the search end with no results, and Chihiro apologizing before scurrying off. Usually that also wouldn't have bothered her, but after what had already happened it didn't help.

So now that classes were done and she was back in her room, she was ready to relax, and that started with stripping. She hadn't even turned on her light as she unbuttoned her top, and practically tore it off, throwing it aside, not noticing as it seemingly hit something in the darkness. She then removed her skirt, and tossed it aside as well, before going so far as to toss off her socks and shoes too. Then she undid her bra and threw it into her dark room, not noticing a little squeak as it hit something. Lastly, she dropped out of her panties and threw them in as well before she stretched out and let out a deep sigh. Naked and comfy at last. Her school uniform always felt a bit stuffy.

But that wasn't all she did to unwind.

Still not bothering with the light, she walked further into her room, knowing it by heart as she maneuvered around the various cables and wires. She could feel her breasts jiggling as she walked, and it only made her more excited for the upcoming event. She jumped onto her bed, landing on her chest at first before she flipped over, and spread her legs.

"Ahhhhh~" she sighed happily as she grabbed both of her breasts and squeezed them. They weren't the biggest things, for sure, but they were still sexy, or at least she thought so. She groped them for a bit, rubbing her nipples with her palms as she let out low moans. She was getting turned on already, feeling her stress melt away as she reached down between her legs and started stroking it.

"Mmmmmm~" she moaned softly, hearing shuffling in the room but not really paying it any mind as she rubbed her lower lips with fervor. She was already very wet, so she didn't wait long to slip a finger inside as she used her free hand to pinch her nipple and twist it, letting out a loud moan. Her finger easily slid in and out of her pussy as her moans grew in intensity. The shuffling also increased, joined by some low whispers, but she was too lost in her own arousal to notice.

"F-fuckkkkk…" she groaned as she could feel herself coming close. She added a second finger, and pulled at her nipple, a loud moan leaving her as, in a flash, the lights turned on. Just as they did, Ibuki came, spraying her juices onto the floor as her toes curled. Her eyes were closed as she felt the blissful release, and when she opened them, she found-

Eyes.

A dozen pairs of eyes staring at her.

"U-um…" Hiyoko said as she stared at the girl, who as clarity slowly returned to her, came to realize she was lying on her bed, completely naked, legs spread, two fingers inside her pussy as one hand rested on her breast, in front of most of her friends.

"H-happy birthday! Surpriiiiseee, hehe…" Mahiru said, her face red. Everybody seemed to be looking away for the most part, glancing at her every once in a while, though some of the boys were straight up staring in shock.

"H-how…did you all get in here?" Ibuki said, still in a slight state of shock as her body began to violently shake, still frozen in her pose of previous bliss.

"We…found someone to unlock the door. It was my idea, but…I didn't think you would…um…" Sonia said, her own face red as well.

"I-I see…heh…hehehehe…" Ibuki laughed, staring low, but slowly building in volume, growing more and more manic until, in one moment, she finally covered herself as she let out the loudest scream she'd ever done in her entire life.