His beloved mother remarries. Yusuke, her son, is shocked by the sudden arrival of her new husband. With mixed feelings, Yusuke goes to meet her new husband, but there he becomes aware of his possessiveness towards his mother. Kokoro jealous that a stranger has taken his mother away from him. He feels a sense of loss as he leaves the home where he was born and raised, filled with happy memories. He wants his mother, who raised him alone, to be happy... but he doesn't want to give her up to anyone else. Yusuke, torn between these conflicting feelings, begins to see his mother as a woman before he knows it.