Ep. 1: Yuzu is ★ 5 years old!

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Kippei Katakura is the handsome playboy of the school. He receives a phone call after school from his family telling him to go home right away. At home he discovers his 5 year-old cousin, Yuzuyu, is staying with them. Reiko tells him that he is the one to be primarily responsible for taking care of her. (Source: Wikipedia)