Kazuchika Irabu 伊良部和親
He's one of the prisoners in the facility Fujishiro is in. Projects the attitude of a tough-guy delinquent. Kind of dumb, but good at fighting. Not exactly unattractive to more rough-and-tumble girls, but he always rejects them. His excuse? "I ain't got time to waste on chicks." In reality, he's impotent, which is the reason for his virginity.