Mansei hatsujô furin-zuma

The film follows siblings Saeki Shingo and Yuri, who have faced the loss of their parents at a young age. As Shingo gets engaged to his girlfriend Keiko, the dynamics shift when they start living together. However, Keiko is entangled in an affair with her boss, Tsuchiya, which raises tensions and complicates their lives.

Yuri, on the other hand, is exploring her sexuality through a relationship with her girlfriend Miyuki, leading to a mix of emotional and intimate encounters. This narrative dives into themes of love, betrayal, and sexual exploration, making it a notable entry in the adult drama genre.