Moon Woo-jin
Kim Yi-joon
박서경
Han Yeo-reum
Choi Hyeon-jin
Jung Ji-wook
김지성
Big Mother
Jung Hee-tae
Big Father
Heo Dong-woon
Yi-joon's Father
Kim Kwang-hyu
Principal
Go Seung Bo
Kyeong-tae
Lee Ju-won
Homeroom Teacher
Jung Yi-rang
Yeo-reum's Mother
Jeon Seok-chan
Yeo-reum's Father
Kim Ji-won
Min-ji
