Once Upon a Time in High School

Spirit of jeet kune do.

A model student transfers to the notorious Jungmoon High School known for its severe corporal punishment by teachers and power struggles between school gangs.

Romance Drama Action

Kwon Sang-woo

(Hyeon-su)

Lee Jung-jin

(Woo-shik)

Han Ga-in

(Eun-ju)

Lee Jong-hyuk

(Cha Jong-hoon)

Park Hyo-joon

(Ham Jae-bok)

Seo Dong-won

(Seong-hun)

Kim Dong-young

(Young Hyeon-su)

Cho Jin-woong

(Yasaengma Gang Member)

Lee Gyu-ho

(Yasaengma Gang Leader)

Kim In-kwon

(Jiksae)

Baek Bong-ki

(Cheetah)

Ahn Nae-sang

(Teacher)

Kim Byung-choon

(Choi Byeong-sam)

Kwon Tae-won

(English Teacher)

Cheon Ho-jin

(Hyeon-su's Father)

Lee Hyeon-seok

(Hyun-soo's Mother)

Jun Sung-ae

(Jong-hoon's Mother)

Yang Han-seok

(P.E. Teacher)

Park Soo-young

(Politics & Economics Teacher)

Kim Bu-seon

(Boniface)

Lee Jang-woo

(Student)

Back Joo-hee

(Student)

Lee Gun-moon

(Korean crow-tit's gang)