Series Cast 14

1. 

   Choi Kang-hee

   Kim Seo-won / Kim Kyung-ja (20 Episodes)

2. 

   Joo Won

   Han Gil-ro / Han Pil-hoon (20 Episodes)

3. 

   Ahn Nae-sang

   Kim Won-seok (20 Episodes)

4. 

   Hwang Chan-seong

   Gong Do Ha (20 Episodes)

5. 

   Byun Seung-yoon

   NIS Academy Instructor (20 Episodes)

6. 

   Choi Jong-hwan

   Oh Kwang-jae (20 Episodes)

7. 

   Dokgo Young-jae

   Han Joo-ma (20 Episodes)

8. 

   Lee El

   Park Soo-young (20 Episodes)

9. 

   Im Ye-jin

   Go Soo-ja (20 Episodes)

10. 

    Yoon Ho Im

    Choi Woo-jin (20 Episodes)

11. 

    Claudia Kim

    Mi-rae (20 Episodes)

12. 

    Lee Han-wi

    Kim Pan-seok (20 Episodes)

13. 

    Noh Young-hak

    Kim Min-ho (20 Episodes)

14. 

    Kim Mi-kyeong

    Oh Mak-nae (20 Episodes)

Series Crew 2