Out of character
I think I got the title tag right at least. Open to 1 or more students

In character
Aridianu sighed as he walked around the campus. The journey here was a long one. Too long in fact. He'd gotten tired along the way, now he just had to find a place to relax. Somewhere quiet would be nice. It was getting dark after all too. He'd be better sleeping now and starting his investigation of the school in the morning. He looked up as he walked, noticing the students heading towards one building in particular. He cocked his head, wondering if that was the place they all slept. He shrugged and figured he'd found out if he went. He started to walk, keeping out of sight, as the last few of the students he could see went in, he went in too.

Looking around, he found this actually WAS where they slept. Lucky for him, he figured he could sleep here too. When no-one was looking, he would put his forehead against a door, starting to revert it back to a slime form, he'd slide it down the side of the door, through its crack to look inside. Most of the rooms he looked inside were occupied by fairly noisy girls. After getting the end of a corridor, he sighed, he wasn't going to find peace and quiet like this. Peeping his head through the last door, he found a surprise. Empty. Totally quiet. He practically jumped for joy, before letting the rest of his body change back to slime so he could slip through the door without unlocking it.

Once inside and back in his human form, he stretched. The quiet was lovely. For some reason he'd always hated loud noises, that and they could also disrupt his slime sometimes, he put it down to sound vibrations but he's not entirely sure on the matter. That was also something he wished to find out. He looked over at the bed, considering going to lay in it. That thought was cast aside when he remembered this wasn't his room and it was totally possible the owner would come back. He sighed and looked around. Nowhere else he could really sleep so he'd have to do what he usually did. He placed his hand against the wall and then pulled it back. His hand made a sort of sticky ripping sound as it came off. Good. He could stick to this one, some walls for some reason he couldn't. Truly he was thankful for being made of slime sometimes. However he didn't really enjoy being in his slime form all that much, mostly because it doesn't have any distinguishing features like his human form.

He sighed once again before starting to revert back into slime and pushing against the wall, sticking against it. He slowly moved up it to the ceiling. As soon as he reached the ceiling, he tested to see if that could stick too. It could, so he happily slid across the ceiling and expanded himself to cover the full thing. He loved having tons of room all to himself. As well as having all that room, expanding spread him out enough for him to barely visible, his usualy blueish colour now just looking like a very light tint on the ceiling. He yawned to himself before drifting off into a peaceful sleep.

A sound awoke him, he tried to regain his senses, still groggy from being asleep. When his sight re-focused, he could see a girl in the room. Odd, he was pretty sure the room was empty when he got here. Must mean she came in while he slept. Maybe.... maybe it was her that made the noise that awoke him?

His thoughts darkened. If that was so, then maybe he should return the favour, wake her up, see how she likes it.... his attention was caught again when he saw her changing into her teddy (I had to look up what this was). He watched as she started reading. He struggled to read the title of the book, however his attention wasn't on it long as it was diverted back to her, looking down at her, watching, waiting.....

All he could was watch as she started fondling her breast, it had caught him by surprise. As he watched the spectacle, he made up his mind, he was going to have to intervene in her enjoyment. He slid across the ceiling, slowly retracting himself, being careful to remain unnoticed, he stopped to watch as she started to explore herself with her fingers, before moving on again.

He slid along the ceiling to the wall behind her. He stared straight down at her as he got closer and closer. He suddenly had a nasty thought. Hmm. Maybe it would work... he decided to split himself into two, then three parts. He sent one of his parts back up to the ceiling, while the other, he had it snake down under the bed, his main body, he kept flat against the wall watching her, as he waited for his other parts to get into position.

He could feel the other parts of himself, they were ready. Now for some mischief. The part of his body under the bed slid out at the end, before sliding up onto the end of the bed, it stretched itself a little taller and wider, however it was still small. Here's where his abilities came into play. The slime part adjusted itself so it's colours changed. Now came the tricky part. Trying to partly keep it's current pose, it began slowly stretching itself, shrinking, fattening, slimming down until it achieved the desired effect, a large gargoyle like monster stood at the end of her bed, or at least, that's what she'd see. In reality it was nothing but a small piece of slime.

The slime on the ceiling started to spread itself out a bit, trying to keep itself unseen. The slime on the wall prepared itself, now directly behind her, ready to react on time.

Now to set it all off. The slime at the end of the bed stretched a small part of it out, tapping the bed roughly where her feet would be, before quickly snapping back into shape, giving the illusion of a large gargoyle like monster reaching for her, between her and the door.

The blade just passed through the gargoyle, being naught but an illusion. The real danger lie in wait behind her, which as he expected, she had moved backwards.

He reacted quickly, forming something like a large mouth with the part of himself on the wall behind the headboard. He jolted forwards, opening around her and then clamping shut, covering from her belly to just over the top of her breasts. He attached himself to the headboard, sticking her with him, restricting her movement. He started to slide parts of himself under the teddy, touching her bare skin, where he started secreting his toxins, the ones that made the illusions seem all the more real.

The gargoyle grabbed her legs, really, only a fairly small piece of slime grabbing them, but to her, it would have felt rough, leathery like it wasn't slime at all. The gargoyle let go of her legs, not removing its eyes from her, it reached down itself, which is when she it, a big penis, standing firm. The gargoyle advanced on her, holding it.

"Open your legs and accept its offering or die", he murmered into her ear. Aridianu smiled to himself, he knew exactly what she was seeing, a gargoyle, he looked himself, seeing a small slime with a small extension in front of it. He chuckled to himself, wondering how she'd react if she knew that's all it was.