Yuya, who has been unlucky with women since being dumped by his girlfriend in his student days. At such a time, his mother's friend, Maiko, who works as a marriage counselor, visits his house... Yuya's heart fluttered at the reunion with his former crush. That night, Maiko, while feeling guilty about having a relationship with him in a drunken state, indulges in secret rendezvous... The two of them continue to enjoy their secret affair with abandon. However, Maiko, worried about his future, who is older than her son by a considerable amount...
