Four people intent on killing themselves meet through the suicide website Black Paradox: Maruso, a nurse who despairs about the future; Taburo, a man who is tortured by his doppelganger; Pii-tan, an engineer ...

Akira's older brother, Atsushi, has been missing for two years. One day, a mysterious woman who seems to know Atsushi's last known whereabouts appears and offers to take him and his friends there : to the is...