Koushaku-sama wa Watashi wo Moteasobu no ga Osuki

Ravelli Attilie was sold into servitude as a child and never received a formal education. She gained recognition among commoners for her skill in writing love letters under the name "Madame Rosa." When an unknown noble commissions her to write a letter for his younger brother, Cedric, she takes the job to save money and escape her current position. Using her talent, she crafts several letters intended to win Cedric’s affection. However, she is surprised when she receives a response that includes her real name.