Murderous Lady Charlotte

Marquis Charlotte has lost all of her family, including her parents, older sister, and grandmother, and is left with an indelible wound. Dubbed the "cursed and unfortunate young lady," one day she makes a deal with the devil and uses her body as a vessel to revive her supposedly dead sister, Lieselotte. Together with Lieselotte, the "other soul" residing within her, Charlotte begins to exact revenge on the murderers of her family, one after the other... (Source: Jump Toon, translated)