I've been having a sex friend relationship with my son's friend for the past 5 years. I'm having a naughty affair with a younger guy... I'm addicted to creampie love affairs. Rena Fukiishi

The movie revolves around Rena Fukiishi, a married woman, and her illicit affair with Kitayama, a younger man who is friends with her son Makoto. The story explores the complexities of their relationship, the secrecy surrounding it, and the emotional turmoil it causes. As the narrative progresses, it delves into themes of desire, loyalty, and the consequences of one's actions, all set against the backdrop of a seemingly ordinary life turned extraordinary by the choices of its protagonist.