조용한 세상

Kim Sang-kyung

Ryu Jung-ho

박용우

Det. Kim Hyung-sa

한보배

Park Soo-yeon

이종수

Detective Choi

정일우

Ryu Jung-ho (young)

함은정

Kim Min-hee

한수연

Jung Yoo-jin

정규수

Jo Ban-jang

오정세

Chang-bae

송부건

Chang-Bae's group 1

곽민석

Tourist 2

조현우

Firefighter 2

김동하

Guy sitting in the next table

손범수

Moderator

정해균

Min-hee's home room teacher (voice)

황택하

Hostage

정윤서

Madam at Western Style House

Jo Yeon-ho

Suicidal man

Kim Jin-kook

Detective 5

김채현

School play female MC

Oh Jeong-won

Park Soo-yeon's mother