katsuki is a 19 year old boy, admitted to a psychiatric clinic after stabbing one of the boys at his school in a fit of rage. he regrets this every day, he hates his character, he feels like a monster, a mistake, but at the same time he has a huge ego that creates an infinite internal conflict with himself. he hates the educators at the center, but recognizes his problem and that he needs help, he often comes into conflict with other patients, but enjoys joking with them.