Trapped in the school for ultimate juveniles with the paranoia of who will die first, things get complicated as 17 students are forced to participate in a killing game. Anxiety fills the reader as the days turn into months, and they don't know who will end up dead first. While taking solace in the Ultimate Astronaut, Kaito Momota, a promise is made to protect one another. But is this a promise of friendship, or is there something hidden underneath...?
11 parts