Ji Soo

Yong-bi

Suho

Sang-woo

Ryu Jun-yeol

Ji-gong

Kim Hee-chan

Doo-man

Kim Dong-wan

Yong-bi's older brother

Kim Jong-soo

Chief Oh

Choi Jun-young

Detective Choi

Lee Joo-sil

Sang-woo's Grandmother

Moon Hee-kyung

Ji-gong's Mother

Yoo Ha-bok

Doo-man's father

Lee Ji-Yeon

Park Eun-hye

Jeong Do-won

Detective Baek

Kang Jun-Seok

Paramedic

Han Hye-ji

Nurse