Ousama Game The Animation

Nobuaki Kanazawa transfers to a new school and avoids friendship because his previous experience taught him that becoming close to people can end with their deaths. His classmates do not understand his behavior until everyone receives a message from someone calling himself "the King," containing an order that must be completed within twenty-four hours and a deadly punishment for refusal.

Nobuaki knows the game well. He survived it once while people around him died one after another. He tries to warn the class, but they believe him only after the first victim. As the commands grow crueler, fear destroys trust among the students even before the punishments do. This time, Nobuaki wants to accomplish what he could not before: find a way to save everyone instead of merely becoming the last survivor.