권상우

Hyeon-su

이정진

Woo-shik

한가인

Eun-ju

이종혁

Cha Jong-hoon

박효준

Ham Jae-bok

서동원

Seong-hun

김동영

Young Hyeon-su

조진웅

Yasaengma Gang Member

Lee Gyu-ho

Yasaengma Gang Leader

김인권

Jiksae

백봉기

Cheetah

안내상

Teacher

김병춘

Choi Byeong-sam

권태원

English Teacher

천호진

Hyeon-su's Father

Lee Hyeon-seok

Hyun-soo's Mother

전성애

Jong-hoon's Mother

Yang Han-seok

P.E. Teacher

박수영

Politics & Economics Teacher

김부선

Boniface