Park Mi-young

Cho Ji-hye

Jo Ji-chul

Yang Jang-mi

Chief Civil Service Officer

Woo-jun

Philip

Yong-seok

Chan-young

Detective Oh

Youngest Detective

Chae Sook-hee

Motel Staff

Hwang Bok-hyun

Young Ji-hye

Big Man

Police Chief

Se-jin's Mother

Youth Division Detective

Soo-bin

JD the Tatooist

Arabian Subordinate

Club Staff

High School Student

Kang Sang-doo

Back Street Nostalgic Girl

Detective Kwak

Past Citation Moderator

Girl Cop

Cyber Investigations Police

Seo-jin

Carmelo

Truck Driver in Accident

Happy Balloons Boss

Chan-woong

Seo-jin's Doctor

Criminal Affairs Division Civil Petitioner

Helium Balloon High Schooler

New Pacific Suicide Female Victim

Woman & Youth Division Detective

Flirty Man at Club

Shinchon Sunglasses Man

Helium Balloon High Schooler

Former Female Taskforce

Happy Balloon University Student

Guardhouse Conscripted Policeman

Arab Owner of Big-sized Clothes Store

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Costume & Make-Up

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Production

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Crew