A platonic love story, the protagonist continues to love the woman he fell in love with when he was a boy for the rest of his life.

In postwar Japan, a new teacher, Miyamoto Yasuko, is discovered by her estranged daughter, Fukuoka Shōko, at a high school. As Yasuko confronts her past, she navigates themes of forgiveness, identity, and motherhood, addressing social taboos of the time.