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
Go Gyu-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 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
Lee Chae-dam
Secret Room Club Addict
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
Lim Dong-yoon
Meatpacking factory worker
Hyun Bong-sik
Chinese restaurant employee