Series Cast 9

1. 

   Joo Won

   Cha Yoojin (16 Episodes)

2. 

   Shim Eun-kyung

   Seol Naeil (16 Episodes)

3. 

   Park Bo-gum

   Lee Yoonhoo (16 Episodes)

4. 

   Min Do-hee

   Choi Minhee (16 Episodes)

5. 

   Go Kyung-pyo

   Yoo Ilrak (16 Episodes)

6. 

   Ahn Kil-kang

   Yoo Wonsang (16 Episodes)

7. 

   Lee Joo-hyung

   Goo Seonjae (16 Episodes)

8. 

   Jo Yoon-woo

   Lee Jaeyong (16 Episodes)

9. 

   Moon Hee-kyung

   Naeil's ex-teacher (16 Episodes)

Series Crew 6