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-kyeom

Professor Kim

Choi Kwon

Manager Baek

Ko Kyu-phil

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 man

Kim Da-som

Therapist

An So-hee

Restaurant Waitress

Bae Suzy

Tatuist

Gyeongree

Waitress

Park Min-ha

Waitress

Ah Ri

Brothel Men-Women

Ji Eun-seo

Secret Room Club Addict 1

Lee Chae-dam

Secret Room Club Addict 2

Lee Kyung-young

No Yeom (uncredited)

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

Lim Dong-yoon

Meatpacking factory worker

Hyun Bong-sik

Chinese restaurant employee