Aku no kyôten

Seiji Hasumi (Hideaki Ito), a sociopathic high school English teacher, secretly kills multiple students who cheat on an exam. After his methods are exposed, Hasumi escalates his violence, targeting those who bullied his students, including a father who died under suspicious circumstances, a student who exposed his past, and a group of students who tried to flee the school during a massacre. The film ends with Hasumi's arrest, but not before he attempts to use Norse mythology to justify his actions.