Series Cast 31

1. 

   Seo Hyun-jin

   Go Ha-neul (16 Episodes)

2. 

   Ra Mi-ran

   Park Seong-soon (16 Episodes)

3. 

   Ha Jun

   Do Yeon-woo (16 Episodes)

4. 

   Lee Chang-hoon

   Bae Myeong-soo (16 Episodes)

5. 

   Lee Yoon-hee

   Lee Seung-taek (16 Episodes)

6. 

   Kim Hong-pa

   Byeon Sung-joo (16 Episodes)

7. 

   Ye Su-jeong

   Yoon Yeo-hwa (16 Episodes)

8. 

   Jo Yeon-hee

   Kim Yi-boon (16 Episodes)

9. 

   Jung Hae-kyun

   Moon Soo-ho (16 Episodes)

10. 

    Park Ji-hwan

    Song Yeong-tae (16 Episodes)

11. 

    Yoo Min-kyu

    Ji Hae-won (16 Episodes)

12. 

    Heo Tae-hee

    Ha Su-hyeon (16 Episodes)

13. 

    Woo Mi-hwa

    Han Jae-hee (16 Episodes)

14. 

    Lee Eun-saem

    Jin Yoo-ra (16 Episodes)

15. 

    Park Ji-hoon

    Ku Jae-hyun (16 Episodes)

16. 

    Jeong Taek-hyeon

    Hwang Bo-tong (16 Episodes)

17. 

    Kim Jung-young

    Moon So-nyeo (Go Ha-neul's mother) (16 Episodes)

18. 

    Maeng Sang-hun

    Go Sung-chul (Go Ha-neul's father) (16 Episodes)

19. 

    Kwon So-hyun

    Song Ji-sun (16 Episodes)

20. 

    Park Yu-rim

    Ryu Jin-hee (16 Episodes)

21. Ryu Ji-eun

    Go Ha-neul (young) (16 Episodes)

22. 

    Baek Eun-hae

    Song Chan-Hee (3 Episodes)

23. 

    Tae In-ho

    Kim Young-ha (2 Episodes)

24. 

    Choe Min

    Han Se-Wol (2 Episodes)

25. 

    Lee Hyun-kyun

    Ha-Neul's high school teacher (1 Episode)

26. 

    Kil Hae-yeon

    Young Ha's mother (1 Episode)

27. 

    Ok Joo-ri

    Store owner (1 Episode)

28. 

    Seo Jeong-yeon

    Ji Yun's mom (1 Episode)

29. 

    Kim Jung-soo

    Principal Gang (1 Episode)

30. 

    Park Jin-young

    High School Principal (1 Episode)

31. 

    Yoo Young-bok

    Gangnam High School Principal (1 Episode)

Series Crew 3