Eiko Kunioka is a 40-year-old mother living alone with her son while her husband is away for work. Their ordinary life suddenly takes an unexpected turn. One day, her son struggles with feelings of love and tries to confide in his mother. Unable to express his emotions in words, he seeks to convey them in another way. As a mother's tenderness intertwines with her son's deep longing, a poignant story unfolds.