Tatsumi Ryuu found himself in the infamous class-3 at Yomi North middle school. He had no knowledge of the class calamity yet, but that makes his situation even more dangerous. Rin Tachibana's family moved to Yomiyama and she joins class-3 as a transfer student. She becomes close friends with Tatsumi, and together they uncover the secrets of the calamity. Who will survive? Who is dead? STRONGLY recommend for ages 14 and older