Yumi raised her son, Kousuke, all by herself. As he grew up, she began to develop feelings for him as a woman, which confused her. Then, her husband who had left 12 years ago returned. He came back with evidence that Kousuke was switched with another child at the hospital and demanded reconciliation, but Kousuke happened to find out the truth. Despairing over the potential loss of their parent-child bond, Kousuke feels Yumi's gentle embrace…
