Tulip Prison occupies an island with no way off it, purpose-built for individuals the justice system has assessed as too far gone to rehabilitate. Shuichiro Minato — nicknamed Exhibitiman by the police — was arrested for indecent exposure and assault after a winter night of what he describes as artistic self-expression. The court did not agree with his framing. Ten years of penal servitude, with a transfer to Tulip Prison based on the severity assessment. The prison is a modern dungeon. The other inmates are considered hentai by society — a judgment that has not made any of them easier to live alongside. Shuichiro is about to find out whether he can survive the environment his own convictions delivered him to.