Eroge no Utsu Endo kara Hiroin-tachi wo Kyuusai Shitara (sainokantls.com)

I reincarnated as Ibuse Reo, the NTR villain in an eroge. In this eroge, the heroines' bad endings are tragic, and if things continue as they are, they'll all meet unhappy fates. 「I won't let them become unhappy—I'll save them!」 Armed with my game knowledge and the violence befitting a villain, I'll destroy every sing…