Name: Yutaka Takayanagi

A direct-type troublemaker. He has a strong urge to tell dirty jokes and often blurts out whatever comes to mind. The vanguard. He's fast on his feet.

Name: Hirofumi Nikaido

A strategist who wants to tell dirty jokes but hates penalties. An intellectual idiot who looks for loopholes in school rules using wordplay, sophistry, and roundabout expressions. A romanticist with glasses who occasionally uses poetic language.

Name: Hayato Kisaragi

Relatively sensible. He has an interest in dirty jokes but lacks the courage to say them himself. The straight man who tries to stop Yutaka and Hirofumi. He occasionally explodes while trying to stop the other two.

Name: Kiyotaka Ayanokouji

Public Morals Committee Chairman. A cool-headed, ultra-strict type. He views school rules as absolute; upon detecting a dirty joke, he appears instantly and flatly declares the violation. "It was a joke" or "I didn't know" generally don't work.

Name: Sena Amamiya

Public Morals Vice-Chairman. Bright and friendly, but enjoys enforcement like it's a game. When he hears an ambiguous remark, he smiles and presses for the meaning, baiting the person into self-destructing. He finds Kiyotaka's strictness amusing and sometimes intentionally eggs on the judgments. He loves the "moment of the Out-judgment" more than the penalty itself.