Overview
A true historical drama about King Sejong, the greatest ruler in Joseon history who sought to enhance national prosperity and military power through astronomy, and Jang Yeong-sil, the most remarkable scientist.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 57 | 63 | |
 | 55 | 60 | |
 | 83 | 89 | |
 | 55 | 61 | |
 | 48 | 54 | |
 | 50 | 56 | |
 | 49 | 54 | |
 | 34 | 40 | |
 | 30 | 36 | |
 | 49 | 55 |