Overview
36-year-old Shoko Morimura (Aika Yukihira) is raising her daughter on her own while working as a temporary worker. At a high school reunion, she reunites with her first love, obstetrician-gynaecologist Kitada Kazuki (Sho Aoyagi), and has a one-night stand with him. Shoko is once again excited, but becomes upset when Kazuki proposes that she become his "sex friend." Part one of a two-part film adaptation of the popular manga by Yoriko Minato. Directed by Hideo Jojo On the Edge of Their Seats, the film depicts the emotions of a man and woman who spend the night together at a class reunion.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 31 | 34 | |
 | 38 | 40 | |
 | 32 | 34 | |
 | 48 | 50 | |
 | 53 | 55 | |
 | 35 | 37 | |
 | 62 | 64 | |
 | 55 | 57 | |
 | 65 | 67 |