It was a killing game. 16 students were locked in the Academy for a killing game under a huge glass dome.

Shuichi Saihara the Ultimate Astronaut was in the lab, working on something with great enthusiasm, while Kokichi Ouma the Ultimate Assassin, boy with heterochromia, stood nearby, discreetly slipping him the tools or information he needed.

Shuichi was surprised at his luck, unaware of Kokichi's help. Kokichi was just watching from the shadows. At the same time, his face was cold and expressionless, although the shorter one for some reason felt a strong attachment to the space boy.

"..."