김지수

Yong-bi

수호

Sang-woo

류준열

Ji-gong

Kim Hee-chan

Doo-man

김동완

Yong-bi's Older Brother

김종수

Chief Oh

Choi Jun-young

Detective Choi

이주실

Sang-woo's Grandmother

문희경

Ji-gong's Mother

유하복

Doo-man's Father

Lee Ji-yeon

Park Eun-hye

Jeong Do-won

Detective Baek

Kang Jun-seok

Paramedic

Han Hye-ji

Nurse

Choi Jung-yol