Man in Tokyo: the Atonement Game of the Villain Huang Mao

What should we do with the "villain Huang Mao" who traveled to the butter world? "Kirihara Tetsuya", who was a social animal in his previous life, woke up and found that he had become the villain Huang Mao in a certain 18-ban butter movie who specialized in destroying the heroine's happiness and was eventually cut into pieces with a hatchet. In order to survive, he binds the "Fate Correction System" and must redeem the girls who have fallen because of him and change their endings. However... "Wait a minute, why do I even need to save the female villain of the final boss?!" From a deceitful idol to a yandere childhood sweetheart, from a debtor to a black nun, Kirihara Tetsuya's atonement game has begun.