I got a Reverse Marriage with the Villainess

The main male protagonist of a female-oriented game, Yeojonnambi, reincarnated as the crown prince. I thought there was no need to throw out the villainess’s condemnation event, so I just took good care of it. Then the villainess’ crazy bit*h broke off the engagement with me. But this time, as if she was after me, the affection-deprived sociopathic heroine bit*h became obsessed with me. So I just gave up on everything and accepted it… … Damn, for some reason, this girl seems to be my younger sister from my past life.