Rei, a friend of Noriko's mother who is a doctor, comes to stay at her house in Tokyo to give a lecture. Her son Kenji is excited to have someone he has admired for a long time visit. That night, the mothers reunite for the first time in a long time and have a drink together. Kenji is lost in thought in his room when Rei accidentally comes into his room... Rei tries to get close to her friend's son as if they were children, but Kenji loses his cool when he sees her drunk and defenseless, and when the mother is not around, they have a relationship...