Jung Jae-young

Character: Han Jung-seok

Han Ji-min

Character: Yoo So-jung

Kim Ji-young

Character: Psychiatrist

Cha Ye-ryun

Character: Lee Ji-won

Choi Won-young

Character: Kang Byung-soo

Hwang Byeong-gug

Character: Japanese researcher (uncredited)

Seong Byeong-suk

Character: Mi-young

Ha Jae-sook

Character: Lethargy woman

Park Gil-su

Character: Section chief Nam (uncredited)

Yoon Kyung-ho

Character: Drunk (uncredited)

Go Seo-hee

Character: (uncredited)

Kim Ji-hoon

Character: Deong-chi