Title: Assassination Classroom
Genres: Action, Comedy, School, Shounen, Supernatural
Description: A humorous and action-packed story about a class of misfits who are trying to kill their new teacher—an alien octopus with bizarre powers and super strength! The teacher has just destroyed the moon and is threatening to destroy the earth—unless his students can destroy him first. What makes things more complicated is that he's the best teacher they've ever had!
(Source: Viz Media)