Tsuki no Yoru Hoshi no Asa

Two cousins, Rio and Ryoutarou, met at age four during a family wedding, where they made a playful promise to marry one another. They lost contact after that day. A decade later, Rio is a top player on the women’s basketball team and in a relationship with another athlete. She attends a game where she encounters Ryoutarou, now the captain of the opposing men’s team. Though both are currently in relationships, their childhood bond resurfaces, and the story follows the next five years of their lives, exploring how their past connection might influence their future.