美食が溢れる国・ランタール王国。その王都にて、借金で困窮した家を支える為に、出稼ぎで働く貧乏伯爵令嬢・シンシア。あくせく働く彼女の唯一の楽しみは、有名スイーツ店巡り！ ある日シンシアはなんの因果か、臣籍降下した王弟・公爵リュファスと一緒にケーキを食べ、さらに彼から婚約を申し込まれ…!? ケーキを通じて出会った、真逆な二人のおかしなお菓子な関係が始まる！
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!
