Character Name : Kang Ho-chang

Original Name : 설경구

Gender : Male

Character Name : Song Jung-wook

Original Name : 천우희

Gender : Female

Character Name : Gun-woo's mother

Original Name : 문소리

Gender : Female

Character Name : Do Ji-yeol

Original Name : 오달수

Gender : Male

Character Name : Teacher Jung

Original Name : 고창석

Gender : Male

Character Name : Principal

Original Name : 강신일

Gender : Male

Character Name : Kang Han-gyeol

Original Name : 성유빈

Gender : Male

Character Name : Gyu-beom's grandmother

Original Name : 남기애

Gender : Female

Character Name : E-den's mother

Original Name : Lee Mi-eun

Gender : Female

Character Name : Gun-woo

Original Name : Yoo Jae-sang

Gender : Male

Character Name : Yoon-jae

Original Name : Jung Yoo-ahn

Gender : Male

Character Name : E-den

Original Name : Jeong Taek-hyeon

Gender : Male

Character Name : Ji-ho

Original Name : 노정의

Gender : Female

Character Name : Police

Original Name : 정승길

Gender : Male

Character Name :

Original Name : Lee Bong-gyu

Gender : Male

Character Name : (uncredited)

Original Name : 김성오

Gender : Male

Character Name :

Original Name : Choi Sun-ja

Gender : Female