Once Upon a Time in High School

Yoo Ha

Đạo diễn

Lee Jong-hyuk

Cha Jong-hoon

Baek Joo-hee

Student

Ahn Nae-sang

Teacher

Kim Beong-choun

Choi Byeong-sam

Cheon Ho-jin

Hyeon-su's Father

Park Soo-young

Politics & Economics Teacher

Kim In-kwon

Jiksae

Kim Dong-young

Young Hyeon-su

Seo Dong-won

Seong-hun

Kwon Sang-woo

Hyeon-su

Lee Jung-jin

Woo-shik

Han Ga-in

Eun-ju

Park Hyo-joon

Ham Jae-bok

Cho Jin-woong

Yasaengma Gang Member

Lee Gyu-ho

Yasaengma Gang Leader

Baek Bong-ki

Cheetah

Kwon Tae-won

English Teacher

Lee Hyeon-seok

Hyun-soo's Mother

Jun Sung-ae

Jong-hoon's Mother

Yang Han-seok

P.E. Teacher

Kim Bu-seon

Boniface

Lee Jang-woo

Student

Lee Geon-moon

Korean crow-tit's gang