13 knew where to find Severity. All he had to do was watch. His little sex slave was really getting as slutty as all the rest of the girls in the school, but 13 couldn't shake that feeling of attachment. She was very good at making him cum, a rare thing in any girl. So, 13 slinked into his slave's Dorm, completely invisible to the naked eye. She would be coming in at any second now.

Lol. Coming.

"See you tomorrow, Beth- and don't worry, the test'll be easy!" Severity called, opening the door to her dorm. As soon as she was inside, she put down her backpack and locked the door. "Good lord, that girl never shuts up," she muttered to the supposedly empty room.

"Good evening, my little slave," the invisible 13 whispered from right above her. "I was looking forward to fucking you today." His tentacles wrapped about the red-haired girl's body, already flowing with that fluid she probably knew really well by now. "I'm going to make sure you enjoy this too, so just relax and give in. The same as that day back in the basement." He snickered, that hungry look in his eye returning.

She gasped softly, surprised. "Master... How did you find your way here?" she asked quietly.

"Oh, I simply followed the signs. Namely, I followed you, and heard a friend of yours ask for your room number, and voila! Here i am."
13 smiled.

Severity nodded, smiling slightly. "You didn't come back to the dungeon," she stated quietly.

"Scene change, my little pet. Just a little scene change." He whipped out his cock, feeling that the aphrodisiac had done its job. "Now begin, slut."

She started to get undressed eagerly, a slight smile on her face as she did.

"tsk, tsk, tsk," said 13, shaking his central head. "You know what I mean by 'getting started,'" he grinned, his cock slapping on her cheek. "Now get sucking."

She knelt immediately. "I'm sorry, Master," she said, before starting to suck on teh head slowly. Her tongue swirled around it rapidly.

"At a slut," moaned the monster, thoroughly enjoying his disposition.
"Be sure to suck it well."

She went deeper, knowing that she probably couldn't get it all into her mouth. "Mmm!"

The tentacles swirled around, pleasuring her and at the same teasing her.
"Just tell when you need it." The monster relaxed, and let the girl do her sucking.

Severity shut her eyes, her lips rubbing back and forth on his shaft.

"Bah screw this," said 13 giving up. She couldn't get him to cum with just a blowjob. He extracted his penis from her lips, another tentacle stuffing itself up her mouth, squeezing aphrodisiac down her throat. "Now then, slave, you're going to do this right, and I don't want to have to work." the gelatinous, tentacled monster laid on his back, the erection protruding in the air. "So go ahead, relieve yourself, and me."