CuriousGumWad's Manga

The story is your usual reincarnated into a novel story the MC is reincarnated as a character who commited suicide before the novel even started so the MC decides not to do the deed. The original novel story goes as is there is a blonde girl who has the power of light and she's in alove triangle with a duke's son and the cursed prince she relieves the prince of his curse prince falls for her but gets rejected as she goes for the duke's son and the duke's son becomes emperor. Now the MC was the orginal MC's sister who drowned herself in a lake the day of her marriage to the cursed prince but she was saved and becomes the FL we know and love today.

The FL and ML are on good terms and ML is an adorable baby bunny who FL is protecting

Red flag classy yandere ML that is a decent lover and kind of a prick? sign me up.