Gender: Male

Age: 18

Height: 179 cm

Blood Type: O

Occupation: Unemployed

Hometown: Saitama

Status: Deceased

BIM Type: Blazing gas

Kill(s): 0

Mitsuo was a very large man. In the beginning he travelled along with Himiko, Masashi Miyamoto and Isamu Kondō.

Not much is known about his past, only that he had sex with a girl he liked once, and that afterwards everybody at his school hated him (implying that it may have been rape, a fact he seems to be unaware of). This could lead to him being sent to the island.