Den_Dmr

The MC realizes that he is the protagonist of an NTR manga, but decides to give his girlfriend the benefit of the doubt and it turns out that everything is wrong, so instead of just crying like a typical NTR manga protagonist, he decides to destroy the guy by beating him up and leaving him sterile and impotent, which was very satisfying to read also ends his relationship with his girlfriend and makes it clear that they will not see each other again since the worst punishment for her would be cold indifference since the MC was always a very important emotional pillar for her. (translator)