Real

Kim Soo-hyun

Jang Tae-yeong

Sung Dong-il

Jo Won-geun

Lee Sung-min

Choi Jin-gi

Sulli

Song Yoo-hwa

Jo Woo-jin

Sa Do-jin

Kim Hong-pa

Choi Nak-hyeon

Jeong In-gyeom

Professor Kim

Choi Kwon

Manager Baek

Ko Kyu-pil

Bald man

Han Ji-eun

Han Ye-won

Jung Yi-seo

Addict

Lee Jung-hyun

Gangster in Chinatown

Son Hyun-joo

Patient

Park Seo-jun

Bodyguard

Kim Da-som

Therapist

An So-hee

Restaurant Waitress

Suzy

Song Yoo-hwa's best friend

Gyeongree

Waitress

Park Min-ha

Waitress

Ah Ri

Brothel Men-Women

Suh Zi-eun

Secret Room Club Addict 1

Lee Chae-dam

Secret Room Club Addict 2

Lee Kyung-young

No-yeom

Yoon Kyung-ho

Broker

Lee Gi-dong

Chief Police Officer

Kim Song-il

Capital CEO

Kim Hye-hwa

Im Ra-hee

IU

Awards ceremony guide

Jason Scott Nelson

Max

Im Dong-yoon

Meatpacking Factory Worker

Hyun Bong-sik

Chinese Restaurant Employee

Oh Ji-young

Private Gambling Place Madame

Jeong Chan-woo

President Han