"I SAW IT. A DAZZLING WORLD ...YES, ANOTHER WORLD."

"I'M SURE I SAW A WORLD THAT WAS NOT THIS ONE."

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 with his own robot clone; and Baracchi, a girl who agonizes about the birthmark on her face.

They wander together in search of the perfect death, fatefully opening a door that leads them to a rather bizarre destiny...