To keep their values, characters are at a critical juncture to act upon their promises throughout time.
| Actor | Role |
|---|---|
 Lee Byung-hunW/White W | W/White W |
 Han Chae-youngJ | J |
 Park Byung-eunOdd eye | Odd eye |
 Kim Tae-wooChoi Dong-hoon | Choi Dong-hoon |
 Jeon No-minKim Woo-gyeong | Kim Woo-gyeong |
 Choi Jung-wooChairman Lee Man-hee | Chairman Lee Man-hee |
| GGoo Seung-hyunPrince Yeongchin | Prince Yeongchin |
 Cho Jae-hyunKing Gojong | King Gojong |
 Lee Je-hoonKing Soonjong | King Soonjong |