He grins, watching her, and decides to push her much more. Stretching the shadow upwards, it glides under her skirt, feeling slightly rough to her skin.

katy stutters a bit in her reading as she feels the shadow go under her skirt

He grins, feeling her tense as she misspeaks. "Don't stop now, you're doing well enough." The shadow brushed lightly against her panties, focusing in on her womanhood.

katy stiffles a groan and continues reading

The substitutes grin is split for a second by his tongue flickering over his bottom lip, and suddenly the girls panties are pulled aside, allowing the shadow to brush her clit directly, delicately.

katy gasps casuing the class too look at her, but she continues reading, not wanting to make a show

The demon blinks in surprise, paused for a moment that all he has gotten so far is a single small gasp. He decided to take it to a new height. The shadow suddenly split in three parts, the main still stimulating her clit, while the other two slowly crawled between her nether lips before spreading them apart, and starting a fast paced, nearly rough rubbing over every inch of them. "Good. Now summarize."

katy gasps harder, but continues to summerize, although it was quite aparent by the fact that some liquid was drooling down her legs

The teacher frowns, knowing his time is coming to a close, he pushes harder, and the shadow merges again, forming a cylinder about an inch around, before pressing solidly between her lips, than thrusting into her fully six inches.

katy gasps loudly, one of the boys mutters something about her havin a egg in her pussy

katy finishes speaking and sits down and tries to ignore the feeling in her pussy, but having a hard time as her pussy gets wetter and wetter

He grinned as she gasps, showing a crack finally in her self control. "Did I say you're finished young lady? " the shadow stays still for a second, than seems to expand, filling every inch of her innermost regions, rubbing manically against every wall.

"i ...oh god... finished the chapter and summerized sir" katy says gasping as the object in her pussy growls larger

He grinned wickedly. "True, but you did so well, why don't you do the next chapter as well?" The shadow clings to her inner walls, rubbing furiously, hitting that most sensitive spot just once as he asks his question.

katy moans unable to stop herself "yes.... sir" she manages to say as she starts reading the next chapter

he grins at her moan, and continues the assault by the shadow, testing how long she can handle it.