Kang Ji-hwan

as Cha Cheol-soo

Sung Yu-ri

as Go Yeong-jae

Lee Soo-hyuk

as Kim Sun-ho

Kim Young-kwang

as Han Seung-woo

Shin Min-chul

as Min-seung

Shin Jung-keun

as Squad chief Yoo

Lee Hee-jun

as Kyeong-seok

Kim Ji-young

as Ko Young-jae (young)

Park Bo-gum

as Cha Cheol-soo (young)

Ra Mi-ran

as Teacher Song

Park Jeong-hak

as Representative Tak

Lee Dae-jin

as Designer Jin

Choi Gwi-hwa

as Detective Pyung

Kim Jung-pal

as Bus Driver

Choe Yoon-seul

as Designer Seul-Li

Heo Myeong-haeng

as Teacher

Kim Woo-bin

as Model Cameo

Kim Yeon-soo

as [Hair Stylist]