Mrs. Keita, who lives in Zhijiang, is a junior high school student. She is versatile in sports but incompetent in learning. He is as tall as his unrelated twin sister.

Jiang Yaxiang, a junior one student, lives with Suminoe Riko, a senior one student, although they didn't like their sisters at first.

Polar temptation, but later gradually attracted by the two sisters, the distance between them gradually shortened. Keita's parents also

Encouraged her son to choose one of her sisters to marry him, Keita lived an enviable life in such an environment.