A stubborn, obstinate old man. He takes a harsh, offensive attitude with the other members, who he distrusts. He was once a subject at a simulation facility for a manned mission to Mars, where a mass murder took place. He was the sole survivor of the incident. At the game's finale it is discovered that he is Junpei, the hero of the first Zero escape game "999", by a very old Akane, someone who was a player in "999" and Junpei's childhood friend.