Reijou Elizabeth no Kareinaru Migawari Seikatsu  

When Elizabeth heard someone call her name, she turned around and saw a nobleman standing in front of her. Suddenly, Elizabeth from the countryside was grabbed by the arm and abducted. According to Sylvester, the heir to a Duke household who claimed to be her kidnapper, Elizabeth looked exactly like his younger sister who went missing after eloping. In exchange for helping her impoverished family, Elizabeth began living a luxurious life as a replacement for his missing sister.