Jiro Chiba
About
Appears in Anamorphosis. Chiba is one of the contestants competing in the Anamorphosis Labyrinth game. Once chaos ensues, he approaches everything with rationality and tries to think of an escape plan.
Chiba is actually a private detective hired by the family of a previous participant to investigate Anamorphosis. He theorizes that the Hirayama who was found dead was only an actor, and that the real person running the event could be one of the contestants.
Chiba is, depending on your interpretation, the only person on set unaware that Anamorphosis Labyrinth is not just a game, but a complex initiative to create a snuff film. Like the other victims, he falls to his death.