宿屋の看板娘、公爵令嬢と入れかわる, Yadoya No Kambammusume, Koshaku Reijo to Ire Kawaru

Maria, the bright and caring poster girl of an inn, one day swaps places with the mistreated noblewoman Charlotte. What Charlotte had been enduring was a gloomy and harsh daily life amidst the intertwined ulterior motives unique to high-ranking nobles. Eventually, she was almost killed by having poison mixed into her tea. Faced with such a situation, the gutsy Maria cannot remain silent! The mean stepmother and sister, the cold-hearted father and brother, and the sadistic fiancé ── she will punish them all swiftly!