My concerns are some of those other fetish that the students apparently has. I had to google some of the ones I had never even heard of before.
Autagonistophilia - a paraphilia in which sexual arousal and orgasm are contingent upon displaying one's self in a live show, i.e., being observed performing on stage or on camera
Cannibalism - act or practice of eating the flesh of the same species as oneself (didn't specify if it was human cannibalism or just cannibalism in general)
Taphephilia - Sexual arousal from being buried alive
Amychopilia - Sexual arousal from being scratched
autonepiophilia - sexual fetish that involves role-playing a regression to an infant-like state
Eonism - the adoption of feminine mannerisms, clothing, etc., by a male
Sadism - the tendency to derive pleasure, especially sexual gratification, from inflicting pain, suffering, or humiliation on others
So we're gonna have an exhibitionist, a sadist, and a trap. Pretty standard things for anime and manga. But the two that set off my alarm are cannibalism and taphephilia. I didn't even realize that cannibalism could even be a fetish. I thought it was just a practice for a very small group of people for a religious reason. Or at least something spiritual like, if I eat this persons flesh then I gain their wisdom.