Overview
Yeon Woo sees only black and white—until finding his missing “probe” soulmate who could restore his color. With secrets, love, and others searching too, the truth awaits.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 21 | 25 | |
 | 26 | 30 | |
 | 37 | 41 | |
 | 22 | 26 | |
 | 25 | 29 | |
 | 24 | 28 | |
 | 38 | 41 | |
 | 38 | 41 |