울학교 이티

김수로

Cheon Seong-geun

박보영

Han Song-i

Lee Chan-ho

Ok Gi-ho

김형범

Cha Seung-ryong

김기방

Meok-tong

Park Jin-Taek

Jin-gook

김영옥

Seong-geun's Mother

하정우

Doctor

Jang Hee-Su

Gi-ho's Mother

이용이

Eun-sil's Mother

Lee Hyung-Kwon

Vice-principal

Gong Ho-seok

Teacher Choi

이한위

Principal

김성령

President Lee

문채원

Lee Eun-sil

이민호

Oh Sang-hoon

백성현

Baek Jung-goo

Lee Eon-jeong

Chemistry Teacher

Kim Byeong-ok

Publishing Company President

Kim Won-jin

Referee

Ji Hye-in

Ji Yeon

Son Min-ji

Interview Student 3

Park Kwang-chun

Director

Choi Jin-won

Writer

Choi Man-Sik

Music

Choi Yong-Gi

Producer

Lee Ja-Young

Costume Design

Shin Min-Gyeong

Editor

Kim Jae-keun

Lighting Coordinator

Choi Deok-Gyu

Cinematography

Park Jung-ryul

Martial Arts Choreographer

Lim Wang-sub

Stunts

Yook Kyung-sam

Line Producer

Kim Il-kwang

Digital Colorist

Lee Ji-yeon

Production Design