A group of boys and girls, twelve in total, gather at an abandoned hospital to die for various different reasons. There, they find the body of a dead boy. The group of twelve attempt to find the person who killed the boy. During their search, the reasons why they want to die are revealed.
高杉真宙
渕野右登
古川琴音
橋本環奈
新田真剣佑
黒島結菜