The RapemanThe Rapeman.

The Rapeman (THE レイプマン) was a Japanese black comedy manga series. It was credited as being created and written by Keiko Aizaki (愛崎 けい子, Aizaki Keiko), and illustrated by Shintaro Miyawaki (みやわき 心太郎, Miyawaki Shintarō), and ran from 1985 to 1992. The controversial premise features a high school teacher who has a secret life as a rapist for hire.