ナンバカ 出席番号のついたバカたち！

Jyugo, Uno, Rock and Nico trade Nanba Prison for a classroom in this standalone special, which recasts the Nanbaka inmates and guards as the students and staff of Nanba 13th High School. Seitarou Tanabata turns up for his first day as a teacher and finds the building full of delinquents wearing the same faces as the cast's convicts. Nothing here feeds the prison storyline; the gags simply move onto a school campus.