Description：Hanaoka Nanazakura (played by Hamabe Minami) and her mother used to live together in the old confectionery shop Kotsuki An. She and her childhood sweetheart, the heir of Kotsuki An, Takatsuki Tsubaki (played by Yokohama Meteor), were first loves, but 15 years ago, after Tsubaki's father was stabbed to death, the police arrested Nanazakura's mother based on the testimony of Tsubaki, who was only 6 years old at the time, and Nanazakura was expelled from Kotsuki An. However, Nanazakura's mother died during the investigation, and the case remains a mystery to this day. 15 years later, Nanazakura and Tsubaki meet again in a dessert duel competition. Tsubaki, who is interested in Nanazakura's desserts, proposed to her when they first met without realizing that she was her childhood sweetheart. In order to prove her mother's innocence, Nanazakura decided to conceal her true identity and use her marriage to Tsubaki to enter Kotsuki An. But there, what awaits her is the unexpected.