A work by the doujin group Cresta has finally been made into a live-action adult film! A college student finds a part-time job as a tutor in his neighborhood. The mother of the tutor, Kinuyo, is incredibly beautiful and he is excited. He becomes close with Kinuyo and accompanies her for meals and drinks as her husband is on an extended business trip. One day, as they are drinking in the living room, a strange atmosphere arises and they end up having a relationship. The man who suddenly loses his virginity becomes fascinated by the charms of the older, sexy married woman.