She's on Duty

Kang No-young, boy at school, Jae-in's neighbour

Math Teacher (cameo)

Detective Cho

Chun Jae-in, undercover cop

Detective Kang

Bae Doo-Sang, mob boss of the Whacker gang

Seung-Hee, daughter of mob boss

Class teacher

Ja-gyeong

Drehbuch