Park Seo-jun

Ki-joon

Kang Ha-neul

Hee-yeol

Sung Dong-il

Professor Yang

Park Ha-seon

Joo-hee

Go Joon

Young-choon

Lee Ho-jung

Yoon-jeong

Bae Yu-ram

Jae-ho

Cho Joon

Koon-ho

Byeon Woo-seok

Celebrity

Kim Kyu-baek

Young-choon's Gang Member

Oh Yu-jin

Eun-mi

Jeong Da-eun

Hyo-jin

Lee Eun-saem

Student

Cha Si-won

Student

Hwang Chan-sung

Self

Shin An-jin

Professor

Jeong Dong-hoon

Student

Lee Seung-hee

Gun-young

Kwon You-na

Ye-jin's Sister

Lee Jun-hyeok

Professor Ha

Seo Jeong-gyu

Professor

Ha Hyun-soo

Seung-min

Lee Da-yeong

Cadet At Police Academy

Lee Won-hee

Police Academy Student

Han Seung-yoon

Police Academy Training Group

Kim Gi-beom

Police Academy Training Group

Han Ji-won

Female middle School Srudent

Jo Hyeon-im

OB/GYN Cleaning Lady

Seo Jeong-yeon

Ki-joon's Mother

Lee Soo-in

Club Woman Soo-in

Jeong Eui-soon

Tteokbokki Restaurant Owner

Kim Eun-kyeong

Tteokbokki Restaurant Owner

Bae Han-yong

Tteokbokki Restaurant Owner

Lee Se-hee

Se-hee

Choi Hong-il

Hee-yeol's Father

Seo Byeong-deok

Disciplinary Committee Professor

Im Hyeon-cheol

Gangnam Police Station Guard

Lee Seon-ho

Police Academy Student

Kim Young-ah

Sterile Woman

Kim Dong-in

Sterile Woman's Husband

Yoo Ho-han

Professor

Kim Jeong-sub

Jung-seob

Cheon Hwa-sung

Ye-jin's mother

Yeo Wook-hwan

Club

A-in

Kidnapped Girl