Tatsuji, the protagonist, is a retired high school teacher living a quiet life of leisure. With time on his hands, his only pleasure is eavesdropping on his son and daughter-in-law’s sex life. One day, a former student named Kana visits him and declares, "Teach, have sex with me!" To think he’d be giving a girl like her a "private lesson" in bed...
| Actor | Role |
|---|---|
| SSakura MizukiKana Arikawa | Kana Arikawa |
 Yumika HayashiKeiko Maruo | Keiko Maruo |
| KKyôko KazamaNatsumi | Natsumi |
| TTatsuo KobayashiMaruo Tatsuji | Maruo Tatsuji |
| TTomohiro OkadaKatsuyuki Maruo | Katsuyuki Maruo |
| MMinoru KunizawaElectrical Shop Worker | Electrical Shop Worker |