Finally, things are getting interesting. Although we'll have to see if another of the powers the succubus has offered Ethan is to see the people he wants to see naked or if he has simply hypnotized her and ordered her to strip. I hope it's the one that allows him to see through clothes. What would be great is if it were also the other way around, that is, to set the stage for when he sleeps with the teacher in the future. The succubus could make the teacher the only person in the class who can see Ethan naked, believing that it's her hallucinations and make her horny. And when the two of them are alone in class, Ethan could appear really naked and surprise her, then fuck her.