There are three murderers hiding in your midst. These ominous words given to the six survivors of a tragic bus accident are followed by an ultimatum: the murderers must anguish over their crimes and find a way to answer for them within one week, or the evidence of their sins will be given to the police. But when every person has a secret, who can you trust?

Translated from the Japanese. Reads from right to left. "First published in japan in 2014 by Square Enix".