Overview
Choi Ki-dong, who becomes a teacher, and Park Young-jun, who becomes a gang member, meet again after 10 years. To compete for Min Ju-ran, they start a fierce battle remembering their high school days, when the situation was completely different.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 30 | 55 | |
 | 31 | 55 | |
 | 30 | 55 | |
 | 24 | 48 | |
 | 35 | 59 | |
 | 32 | 56 | |
 | 55 | April 21, 2023 (77) | |
 | 31 | 55 | |
 | - | - | |
 | 21 | 45 |