A mother, Mi-Ai, goes to Tokyo once a month to check on her son who moved there for college. However, after visiting him multiple times, her love for her child gradually turns into something more than familial affection. 'It's unacceptable for parent and child to do this. But I can't change the fact that I love him.' Tormented by the conflict arising from their blood relation, Mi-Ai cannot stop her body from aching with desire for her son, leading her to decide to go back to Tokyo again.
