The main character and "anti-hero", The Rapeman, is a high school teacher by day and dispenses his surreal brand of "justice" at night under the business "Rapeman Services", which is co-run with his uncle, a former surgeon. He uses rape as his weapon. The business' motto is "Righting wrongs through penetration".

Junko Asamias Kazuo's Lover (voice)
Yuzuru Fujimotoas Otani (voice)
Kenyu Horiuchias Keisuke Iwazaki /Rapeman (voice)
Masako Katsukias Maki Otani /Red Cat (voice)
Satomi Korogias Yuka Ichimonji (voice)
Kenichi Onoas Tatsuo (voice)