Suterareta Itsuwari Koujo ga Kaettkita Ryuu

Shiloh the orphan thought she found happiness when she was adopted by Duke Defons, even if he only did it because she resembled his late daughter, Claire. But when Claire turns out to be alive and returns eight years later, the Defonses start treating Shiloh coldly and waste no time canceling her adoption. Even worse, they frame her for a murder that she didn't commit! Backed into a corner, the desperate Shiloh accepts the helping hand of her mysterious acquaintance, Caleb, whose intentions aren't entirely pure, either. Can Shiloh clear her name and get revenge on everyone who wronged her? (Source: Tappytoon)