Overview
A school director is forced to train the 'worst' students of his school to master Taekwondo as the old coach, taking along the best of his athletes, left the school.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 24 | 45 | |
 | 21 | 42 | |
 | 21 | 42 | |
 | 23 | 44 | |
 | 24 | 45 | |
 | 20 | March 18, 2020 (36) | |
 | 22 | 43 | |
 | 21 | 42 | |
 | 37 | 58 | |
 | 47 | 68 |