Akuyaku Reijou wa Heroine wo Ijimeteiru Baai de wa nai

Haruka is mysteriously reincarnated as Layna, the villainess daughter of a Duke in her favorite otome game. As soon as that happens, a game event begins where Layna's supposed to bully the game's heroine. But if Layna bullies her, she's sure to follow the game's path to her eventual doom! This is no time to be a villainess! One must enjoy life to the fullest, right?! Well, it seems she's chosen to fight for her happiness, but the heroine and the romance options in the game keep making her life an absolute mess!
(Source: Alpha Manga)