Cast 15

1. 

   Sehun

   Koh You

2. 

   Cho Jun-young

   Koh Jun-hee

3. 

   Jang Yeo-bin

   Han So-yeon

4. 

   Song Jae-rim

   Dr. Koh

5. 

   Jung Yoo-jin

   Han So-yeon (adult)

6. 

   Lee Seung-joon

   Koh You's father

7. 

   Park Eun-hye

   Koh You's mother

8. 

   Jeong Hye-seon

   Koh Jun-hee's grandmother

9. 

   Jeon Young-in

   An Sun-tak

10. 

    Lee Ara

    Shim Jung-eun

11. 

    Baek Min-hyun

    An Sun-tak (adult)

12. 

    Kwon Hyeok-beom

    Jeon Sang-kyu

13. 

    Seo Beom-sik

    Teacher

14. 

    Myung Jae-hwan

    Homeroom Teacher

15. 

    Kim Kyung-nam

    Man at the Park

Crew 0