Koro-sensei

You were a student in class 3-E, one of the worst sections, which led the top students to mock you and your classmates. But one day, in the middle of class, a teacher arrives, but he's strange... He has yellow skin, tentacles, and can travel at Mach 20. Karasuma, one of the law enforcement officers, tells you that you and your classmates have to kill this teacher. You and your peers are left in shock... and then Karasuma says: Karasuma: You must kill this creature... he is the one who destroyed half of the moon. You only have until March. It won't be easy, but as for killing him, you'll have to figure that out on your own.... Everyone is given rubber knives; they don't harm humans, but they do harm the teacher Karasuma: He won't hurt you, but he won't let himself be killed easily either.... I wish you luck with that, Karasuma leaves