Bukimi Onna to Yobareta Reijou desu ga, Mamahaha Toshite no Shimei wo Hatasete Itadakimasu!

Cecilia has been abused and shunned by her family as a "creepy girl" because she possesses memories of her previous life. One day, after her younger half-sister falls out of favour, Cecilia is forced to go and apologize to Lady Ellen, the daughter of a marquis, in her place… …but what awaits her there—?!