Overview
Arata Kaizaki, a jobless adult, undergoes an experiment that makes him 10 years younger. He goes back to high school and falls in love with Chizuru Hishiro, who is more than she seems.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 18 | 27 | |
 | 18 | 26 | |
 | 20 | 29 | |
 | 20 | 29 | |
 | 21 | 29 | |
 | 28 | 36 | |
 | 38 | 47 | |
 | 27 | 36 | |
 | 27 | 36 | |
 | 26 | 34 |