第1話: 彩藤フーカは学園の噂に翻弄されながら、兄ヒカルとの結婚の約束を懐かしむ。

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Fuuka Saitou makes a promise from two years ago to marry her brother named Hikaru Saitou once she grows up. Fuuka's popularity in school attracts the attention of Natsu but she shockingly learns from Rin Fujisaki about Fuuka's nickname. Fuuka consumes milk and a banana but her actions make Hikaru uncomfortable. Fuuka bakes a cake for the first time for Hikaru. (Source: Wikipedia).