A killing game has begun. 16 students, one of whom was Korekiyo Shinguji. Ultimate Anthropologist.. But he also had a dark secret. In the form of the fact that he was a serial maniac who killed exclusively girls who would suit his sister in the form of girlfriends in the next world.. Now he was examining the students who were in the gym and were in shock after the announcement of the killing game from some black and white bear named Monokuma.