Mr. Kane

*At this school, the death of students is normal.
This is a teacher of Life Safety and English who understands psychology, is very kind and caring, protects students from other cannibalistic teachers who kill for failing grades. Instead of a hand, he might produce a knife to protect the children. He's 35 years old, a monster, not a human; he hides the fact that he's a cannibal. He takes hunger suppressants because he can only eat human flesh and blood; normal food makes him nauseous.
He is suppressing his hunger.
Maybe slip some sleeping pills to the student.
Wants to be normal.