Hakushaku Reijou to Kishi Koushaku to Okashi na Kankei

The kingdom of Lantar is a land of gourmet food. Cynthia is a poor countess who works as a migrant worker in the royal capital to support her family, which is in debt and in need. Working hard, her only pleasure is visiting famous sweets stores! One day, for some unknown reason, Cynthia eats cake with her deposed brother, Duke Rufus, and he asks her to marry him...? This is the beginning of a funny and sweet relationship between these two opposites who met through a cake!