The Plan Man

Jung Jae-young

Han Jung-seok

Han Ji-min

Yoo So-jung

Kim Ji-young

Psychiatrist

Cha Ye-ryun

Lee Ji-won

Choi Won-young

Kang Byung-soo

Hwang Byeong-gug

Japanese researcher (uncredited)

Seong Byeong-suk

Mi-young

Ha Jae-sook

Lethargy woman

Park Gil-su

Section chief Nam (uncredited)

Yoon Kyung-ho

Drunk (uncredited)