IU

as Go Hajin

(+1 more)

20 episodes

Lee Joon-gi

as Wang So (4th Prince)

20 episodes

Kang Ha-neul

as Wang Wook (8th Prince)

20 episodes

Hong Jong-hyun

as Wang Yo (3rd Prince)

20 episodes

Baekhyun

as Wang Eun (10th Prince)

20 episodes

Nam Joo-hyuk

as Wang Baeka (13th Prince)

20 episodes

Kim Ji-soo

as Wang Jeong (14th Prince)

20 episodes

Yoon Sun-woo

as Wang Won (9th Prince)

20 episodes

Kim San-ho

as Wang Mu (Crown Prince

(+1 more)

20 episodes

Seohyun

as Princess Woohee

20 episodes

Kang Hanna

as Princess Hwangbo Yeonhwa

(+1 more)

20 episodes

Jin Ki-joo

as Chaeryeong

20 episodes

Ji Hye-ran

as Park Soondeok

20 episodes

Sung Dong-il

as General Park Soogyeong

20 episodes

Kim Sung-kyun

as Choi Jimong

(+1 more)

20 episodes

Jo Min-ki

as King Taejo

20 episodes

Kim Kang-il

as Shincheon Kang

20 episodes

Park Ji-young

as Queen Yoo

(+1 more)

20 episodes

Park Jeong-hak

as Wang Shikryeom

20 episodes

Woo Hee-jin

as Court Lady Oh Sooyeon

20 episodes