Shitsuji no Goshujin-sama

Okado, a small bakery on the edge of the shopping district, was left to Masumi by her grandfather, a skilled baker. With her beloved store facing turmoil, a self-proclaimed "butler" appears before her!? This man promises to grant her every wish if she becomes his master. What will become of the reversed master-servant relationship between them...? (Source: Shogakukan, translated)