설경구

Kang Ho-chang

천우희

Song Jung-wook

문소리

Gun-woo's mother

오달수

Do Ji-yeol

Ko Chang Seok

Teacher Jung

강신일

Principal

성유빈

Kang Han-gyeol

남기애

Gyu-beom's grandmother

Lee Mi-eun

E-den's mother

Yoo Jae-sang

Gun-woo

Jung Yoo-ahn

Yoon-jae

Jeong Taek-hyeon

E-den

Roh Jeong Eui

Ji-ho

정승길

Police

Lee Bong-gyu

김지훈