Case 6: Imprison

Baku is assigned a new mission: escape from prison. Baku tries to escape with Nem, Masumi Bijogi and Reiko, who are trapped in a prison nightmare, but their way is blocked by various traps. And what secret is hidden in the relationship between Nem and Bijogi? Nox appears in front of Baku and eerily says, "This is an inescapable prison of death." Will Baku be able to carry out his impregnable mission?