この私のお嬢様！〜没落令嬢系メイドは公爵令嬢に尽くしてる〜

Mary Superior (10 years old), the daughter of a fallen aristocrat whose father and mother committed a crime, was hired as a maid by the Duke of Ken Orble. But her ambitions made her vow to use whatever means she could to regain her former position. She then sets her sights on Letitia (7 years old), the shy only daughter of the Ken Orble family. By befriending Letitia, Mary plans to woo her and raise her to be her pawn that moves as she pleases. A few years later―― “Haaaaa!? Letty got married!??????? What kind of horse’s bones?!???????” Mary was a strong supporter of Letitia.