On the last day of the term, Akane, a private high school math teacher, engages in a passionate tryst in the classroom with her lover, an English teacher named Sudo. However, she is devastated to learn that Sudo's wife is pregnant...
| Actor | Role |
|---|---|
| RRino TakeuchiAkane Sawaguchi | Akane Sawaguchi |
| EErina AoyamaNana Ayase | Nana Ayase |
| MMotoko SasakiYoko Nakajima | Yoko Nakajima |
| YYasunari KubotaYusuke Nikaido | Yusuke Nikaido |
 Seiji NakamitsuHaruki Nikaido | Haruki Nikaido |
| TTeruo OkaKazuyuki Sudo | Kazuyuki Sudo |