Netorare Manga no Kuzu Otoko ni Tensei Shita Hazu ga Heroine ga Yottekuru Ken

Ryuichi Shishido is suddenly reincarnated into the antagonist of an NTR story, but as he hates the personality of his character, he decides to avoid any events that may occur. But for some reason the Heroine of the story, Shizuna Rindou always appears around him. Could it be that these two were already in a relationship before the game even started?

Adaptation of the popular Novel posted in Kakuyomu "The Story of a Man Who Is Reincarnated as the Shittiest Guy in a Doujin, but the Heroine Keeps on Coming Close to Him"