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)
고서희
— (uncredited)
Kim Ji-hoon
— Deong-chi