Series Cast 17

1. 

   Seohyun

   Cha Seon-chaek / K (12 Episodes)

2. 

   Ok Taec-yeon

   Prince Kyungsung / Lee Beon (12 Episodes)

3. 

   Kwon Han-sol

   Cho Eun-ae (12 Episodes)

4. 

   Seo Bum-june

   Jeong Su-gyeom (12 Episodes)

5. 

   Ji Hye-won

   Do Hwa-seon (12 Episodes)

6. 

   Lee Tae-seon

   Prince Seonghyeon (12 Episodes)

7. 

   Seo Hyun-chul

   Cha Ho-yeol (12 Episodes)

8. 

   Yun Yoo-sun

   Yoon Deok-jeong (12 Episodes)

9. 

   Lee Sang-un

   Cha Jang-ho (12 Episodes)

10. 

    Kim Shin-bi

    Cha Du-ho (12 Episodes)

11. 

    Yoon Jung-hoon

    Cha Se-ho (12 Episodes)

12. 

    Song Yeong-jae

    — (12 Episodes)

13. 

    Ju Seok-tae

    King Seoljong (12 Episodes)

14. 

    Nam Kee-ae

    — (12 Episodes)

15. 

    Jung Hee-tae

    Do Bae-myeong (12 Episodes)

16. 

    Jung Ho-bin

    Jeong Moon-seok (12 Episodes)

17. 

    Kim Young-woong

    Cho Byeong-mu (12 Episodes)

Series Crew 1