The bell rings and the classroom empties quickly, students eager to get out and go about their after school activities. Like most normal high schools however, some of the labs stay open after class, so that students may get in whatever work they need to.

This was perfect ground for Siolazar, who was waiting outside the classroom for the class to be over, hiding perfectly in a pool of shadow, all around completely oblivious to his existance. As soon as the door opened, he slid from shadow to shadow of the girls, making his way to rest underneath a desk, the flourescent lighting casting constant shadow for him to live in. He stretched out his form slightly, perfectly conforming to the desk's shadow, and he waited, for he had the time.

Movement was what first drew Siolazar's attention, the door sliding opening, the well oiled hinges barely making a sound as girl entered, and it's form quivered as it began to think of what experiments it could potentially conduct today.

As the girl sat upon the desk, Siolazar smiles inwardly, quite obviously lacking the facilities to truly smile. Perhaps it would start with something simple, nothing too strenuous, else he may scare her away. A look upwards revealed the girls panties, and slowly, Siolazar began to form a plan.

Letting it's form flow and pool, it tentatively made contact with the edge of the girl's leg's shadow, just caressing it, transferring the feeling from her shadows surface to hers, and it waited for her response to his stiumulus.

The questing hand to eliminate the 'bug' is met with a retreat of Siolazar's shadowy 'hand'. It had expected such a response, as this way typical for the humans to react in such a way, quick to swat away such things that they don't understand.

Perhaps now would be a good time for a slightly more aggressive action on it's part. As Maya's hand reached downwards, Siolazar took the opportunity to seize the shadow of her hand, locking it's grip around her wrist, without actually contacting her.

Now, the experiment could continue.

Siolazar quivered with amusement, it's shadowy form rippling at the edges at Maya's attempts to break free from it's grip. It was a futile attempt unless it wished her release, and it was not done with her as of yet.

As she crouched down, Siolazar used the opportunity to pool out it's inky, midnight form a bit more, spilling a bit from the sides of the desk's shadow, counting on the fact that she would not notice due to her frantic attempts to release herself. As it did so, it slid beneath her shadow and rested in it for the moment, still not releasing her hand, his grip firmly on her shadow.

Poised directly beneath her as it was, Siolazar then decided to advance the experiment, and see how it's subject reacted to other stimulus response. Melding out from it's form, a single lash-like tentacle of shadow slid between the shadow of her legs, running the tip of itself against where her panties would have been, if her shadow had any, and by virtue of it's nature, transferred the feeling.

The inky pool that is Siolazar quivered as the girl yelped out in surprise. So far, everything had gone like all of the other experiments. It was almost disappointed that it had gone this way, so much like the others. Well, at least it could try to get a different response.

The frantic movements of the girl forced Siolazar out of it's daze of thinking, returning it's attention to the matter at hand. Taking the same shadowy tentacle, it probed against Maya's sex once again, this time a little harder, almost as if testing her resistance to it's tender ministrations.

At the same time, the midnight puddle slid out around her, surrounding her by hiding in her own shadow, suffusing it with Siolazar's own essence, completely hidden, yet still maintaining it's hold on her hand.

The sudden crying out of the girl made Siolazar quiver with excitement again. This one was vocal, a trait that it was not used to, though the surprise was not pleasant. As her scream echoed throughout the classroom, Siolazar frowned. It would not to well to have someone come investigate it's experiment on the girl.

Unfurling it's form more, it draped itself over the mouth of Maya's shadow, and her screaming ceased, the sound muffled by a seeming invisible wall of air. Satisfied with this, Siolazar rebegan the experiment. A different tactic this time. Letting the tentacle disperse back into nothingness, it took the girl's hand and spread her legs open with it. Inwards it pushed the hand, growing closer to her sex, centimeter by centimeter, and it relished the thought of her reaction.

The fear was almost tangible in the air and it amused Siolazar. To think to humans were so protective of the areas of their bodies that if they would just let it experiment with, they could derive much pleasure. Alas, however, the experiments would be far less entertaining if the subjects didn't resist.

The inexorable progress of Maya's hand was halted slightly by the closing of her legs, and the shadowy pool quivered with amusement, it's form wavering around the outside edges of hers. The legs were engulfed in shadow, and forced apart once more, this time without resistance, and the hand was pushed along it's way.

Siolazar brought her hand to her mound and pressed her fingers against it, soft fingers making contact through the thin panties. Each of her fingers was used in turn to rub against herself, in slow and precise cadence, some of the shadows own form caressing against her as well, a double assault as it were.

The growing wetness of her sex was sensed by Siolazar, who continued to have Maya rub herself. It changed up the pace randomly, continuing to arouse the young woman, the experiment going better now. As a matter of fact, it was going positively wonderfully now.

The thin black thong was a detriment at this point, as it prevented the pool from continuing. The other hand of the girl was grasped in shadow, and was brought down to the other, deftly manipulating his subject to remove her own undergarments, exposing her wettening sex to the air now.

One hand was let free once more, and the original hand was brought down to lightly tap it's fingers against her slit, a display of agonizingly tender torture as Siolazar continued it's exercise with the girl. A pair of midnight tentacles was formed around the girl's chest, and they snaked their way inside her shirt, gently playing at her breasts through her bra as she was forced to pleasure herself.