Revolver

Game consists of various scenarios, and the number increases with each special event. Here's a short introduction to "Tomokazu Yuki edition," which you'll find in the beginning!

Rape incidents are occurring left and right in this town, and Tomokazu Yuki, a teacher at the private "Takayama School," gets fed up and begins to investigate these incidents by himself. However, in spite of his efforts, incidents begin to increase even more...

Nearly at wit's end, he one day finds conclusive evidence at the scene of a crime. It's a mysterious membership card from the "Rape Club"!!!

[From gamelexgs]