The Plan Man

Jung Jae-young

Han Jung-seok

Han Ji-min

Yoo So-jung

Kim Ji-young

Psychiatrist

차예련

Lee Ji-won

최원영

Kang Byung-soo

황병국

Japanese researcher (uncredited)

성병숙

Mi-young

Ha Jae-sook

Lethargy woman

박길수

Section chief Nam (uncredited)

Yoon Kyeong-ho

Drunk (uncredited)