Survive as the Villain's Cousin

The culprit who turned his twin cousins into villains by appearing in a side story of a novel! Who would have thought he would be reincarnated as a villain? I sighed deeply and made up my mind. ‘Let’s raise the twins with love and prevent their darkening!’ I don’t care about the novel and get along well with the twins, but the second male lead, whom I had no reason to get involved with, keeps getting more and more obsessed with me! Ah. Where did it go wrong?And why did the second male lead turn dark when I was just trying to stop the villain from turning dark? “Please, please don’t back down anymore. I don’t know how much longer I can endure it.” (Source: KakaoPage, translated)