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Nezu was looking forward to his elementary school reunion—after all, his class was united by unbreakable bonds. But when his former classmate, Mikio, reveals that this reunion is a very real matter of life and death...suddenly Nezu finds those bonds put to the test. By the author of Until Your Bones Rot!
The summer they were eleven, they killed a man and buried his body in a cave. Since then, every year, one summer night has marked a ritual: a ritual never to forget, and never to betray. Five years have passed. Their sixteenth summer. The body, now a skeleton. Unraveled lies. A faceless blackmailer. The phone rings, and a life is torn apart. The bones, like their crime: never rotting, never fading away. Now, a living hell begins.
The case was closed after 52 hours. During that time, 12 people died in total. Human beings became beasts in the inescapable classrooms. Twenty-seven former sixth-grade members of Shinozuka Elementary School, who gathered at their ex-school building for a reunion, were imprisoned. The name of the culprit was the school's alumni, Mikio Yumesaki. The experiment on "human virtue under extreme circumstances" revealed the true nature of human beings. Suspicion, lust, revelation, revenge, and betrayal. Ethical suspense that denounces morality.