Invisible High School Hypnotist (Working Link)

As the girl sucked Rex off, Rex wondered what to do with the other girls.

Rex gad two abilities, one to turn invisible, the other to mind control people. He used this ability to get into an all-female school.

He had all the students lift up their shirts and remove their bras, with the teacher and them viewing it as normal.

He then gave this girl his dick and told her to suck.

She was certainly a good cocksucker.

"Keep sucking," he ordered. "And as you keep sucking, you will slowly become no longer a human, but a cocksucking machine. A machine made of gears, wires, hinges, that exists only to suck my dick forever and ever."

The girl said nothing, obviously, but kept sucking away. But Rex knew his commands got through.

He decided to mess with one of the other girls, or even the teacher next.