Yumi raised her son, Kosuke, with her own hands. And as he grew older, she was puzzled by the fact that she began to feel for him not as a mother, but as the opposite sex. At that time, my husband, who had left 12 years ago, returned. Kosuke brings evidence that he was mistaken for another child at the hospital and presses for revenge, but by chance, Kosuke learns the fact. Kosuke despairs that the connection between parents and children will disappear. - But Yumi hugs him gently ...