Once Upon a Time in High School

Kwon Sang-woo

as

Hyeon-su

Lee Jung-jin

as

Woo-shik

Han Ga-in

as

Eun-ju

Lee Jong-hyuk

as

Cha Jong-hoon

Park Hyo-joon

as

Ham Jae-bok

Seo Dong-won

as

Seong-hun

Kim Dong-young

as

Young Hyeon-su

Cho Jin-woong

as

Yasaengma Gang...

Lee Gyu-ho

as

Yasaengma Gang...

Kim In-kwon

as

Jiksae

Baek Bong-ki

as

Cheetah

Ahn Nae-sang

as

Teacher

Kim Byung-choon

as

Choi Byeong-sam

Kwon Tae-won

as

English Teacher

Cheon Ho-jin

as

Hyeon-su's Fat...

Lee Hyeon-seok

as

Hyun-soo's Mot...

Jun Sung-ae

as

Jong-hoon's Mo...

Yang Han-seok

as

P.E. Teacher

Park Soo-young

as

Politics & Eco...

Kim Bu-seon

as

Boniface

Lee Jang-woo

as

Student

Baek Joo-hee

as

Student

Lee Geon-moon

as

Korean crow-ti...