Teach You a Lesson

Kim Moo-yul

Na Hwa-jin

Lee Sung-min

Choi Kang-seok

Jin Ki-joo

Im Han-rim

P.O

Bong Geun-dae

Ahn Ha-young

Choi Ga-yun

Kim Beong-choun

Lee Cheol-myeon

Baek Ji-hye

Gi-tae's assistant

Choi Jae-sup

Kang Jun-man

Kim Jong-soo

Hwang Gi-tae

Lee Bong-joon

Cho Gyu-cheol

Lee Yeo-jin

Anchor

Jeon Bong-seok

Kim Hyeong-ju

Ok Jin-uk

Cho In-beom

Yoo Tae-joo

Park Seong-hwan

Lee Sang-hee

Jung Seong-yeong

Park Seo-yoon

Han Ye-ri

Jang Yo-hoon

Min Ji-ung

임현묵

Yun Min-su

윤태식

Lee Du-hyeon

최현준

Choi U-seong

Kim Kyun-ha

Kim Su-gyeom

Do Geon-wu

Na Jung-hwan

Lee Woo-je

Jang Seong-gu

Kim Jae-seon

Lee Chi-ho

Lee Seung-noh

Jung Hyun-tae

Lee Jung-hwa

Ms. Min

Moon Dong-ho

Seo Jin-hyeok

Lee Ho-cheol

Reporter 1

Jin Si-won

Reporter 3

Song Seon-hyo

Reporter 2

Kim Eun-hee

Reporter 4

Choi Sol-hee

Assemblywoman

Lee Chan-yong

Kim Gyeong-min

Lee Seung-gyu

Ryu Jun-hyeong

Jeong Soo-hyun

Park Dae-seok

Kim Do-gun

Kim Gwang-su

Lee Tae-hwan

Jang Kwon-hyuk

Seong No-jin

Principal

Byun Yun-jeong

Hyeong-ju's mother

Kim Chan-hyung

Boss

Kim Se-yeon

Jung So-yeong

Kwon Hyuk

Ko Yeong-su

Lee Si-young

Ms. Jung's Friend

Jeong Seo-yeon

Ko Yeong-su's Wife

Park Yong

Principal

Seo Dong-hyeon

Male Teacher 1

Park Bo-bae

Female Teacher 1

Yoon Woon-yong

Teacher

Choi Deok-moon

Cheon Sang-yeol

Bae Jun-hyung

Park Hyeon-ung

Sim Su-bin

Jung Su-jeong

Kim Sun-hoa

Su-jeong's Mother

Song Si-an

Choi Ji-seon

Yoon Hyun-gil

Ji-seon's mother

Jang Hee-jung

Lee Young-mi

Choi Ja-woon

Kim U-jin

Park Ji-yeon

Lee Ji-young

Kim Ye-rin

Yeon-seo

Kwon Dong-ho

Kim Seok-hyeon

Kang Ji-eun

Kim Ji-eun

Kim Chae-eun

Oh Yun-jin

Bae Jae-young

Lee Jae-yun

Jo Eun-sol

Shin Ji-su

조준호

Ji Seong-bin

Kim Tae-young

Jung Hyeon-min

Seo Young-hee

Hyeon-min's mother

Lee Seok-jun

Hyeon-min's father

Yoon Young-min

Consultant

Cho Yeon-jin

Yeon-jun's mother

Chang Eun-a

Da-hui's mother

Kim Da-huin

Yoon Tae-gyeong

Lee Ga-yeon

Ham Yu-ri

Jeon Seung-hoon

Seo Tae-hoon

So Yi-han

Kim In-jun

Kang Joon

Kim Hak-jae

Song Young-gyu

Ryu Gwang-pil

Kim Eun-seok

Principal Kim

Lee Ha-ye

2-5 Student 7

Jang So-yun

2-5 Student 12

Jeon Kwang-jin

Homeroom Teacher

Kwak Kyoung-hwa

Female Teacher 1

Choi In-sun

Substitute Teacher

Park Wan-kyu

Dae-seok's father

Lee Gwang-hee

Automobile Department 1

Bahk Woo-young

Electrical Department 2

Lee Dong-gi

Electrical Department 5

Gu Bon-jin

Hyeon-ung's father

Kim Tae-yoo

Institute staff

Ok Il-jae

Prosecutors' office investigator

Han Ki-jang

Lawyer

Lee Su-ho

Kang Seo-jun

Lee Ji-hae

Seo-jun's mother

Choi E-jun

Student

Kim Eun-ho

Student

박시현

Student

Kim Seong-yong

Bank manager

Han So-hyun

Bank teller

Lee Eun-joo

Prosecutor

Choi Young-min

Ministry of Education staff

Park Gang-to

Ministry of Education staff

Han Sun-ae

Student's mother

Lee Do-eun

Student's mother

김수영

Student's mother

Bae Sung-il

Prison warden

Cho Yu-jin

Ji-ung's mother

Yeo Min-goo

Min-su's father

Jang Ji-yong

Du-hyeon's father

Yoo In-hye

U-seong's mother

Eom Ji-man

Detective

Ahn Chan-woong

Detective

Lee Hyung-joo

Teacher Lee

Kim Yu-bin

Student

Cho Hyen-woo

Jae-yun's father

Lee Seo-won

Jae-yun's mother

Chun Myung-woo

Gang member

Choi Jun-kyu

Gang member

Jeon Kyu-won

Student

Seo Hye-min

Teacher

Lee Seo-han

Seo Beom-su

Jo Jae-young

Detective

김은영

School nurse

Shin Dong-jun

Lee Jong-su

Jeon Yeong

Seong-gu's mother

Park Ji-won

Chi-ho's mother

Eom Ju-yeon

Lee Ji-hyo

Jeong Jong-yeol

Committee chairman

Baek Na-gyeong

Student

Park Ryang-woo

Scam victim

Cho Tae-min

Motorcycle ad guy

Park Jae-hwi

Basketball player

Son Da-yeon

Han-rim's classmate

박관우

Han-rim's classmate

Kim Dae-geun

MZ Gangster 5

Jeon Young-woon

MZ Gangster 12

Lee So-geum

Detective

Park Seung-hyun

Detective

Lee Seung-jin

Teacher

Han Nu-ri

Female Teacher

Seo Gwang-jae

Hearing chairperson

Kim Min-seok

Parole examiner

Lee Jae-woong

ERPB security guard

Ha Na-ri

Teacher

Kim Kwan-jang

Student's parent

Dok Ko-kwang

Teacher

Seo Ji-ho

Student

Jeong Ji-soon

Male Student 1

Yoo Geun-sang

Male Student 2

Kim Sung-jae

2-5 Conforming Student

Shin A-ran

2-5 Conforming Student

Lim Su-yeon

2-5 Conforming Student

Shin Dae-geun

2-5 Bystander Student

Kim Ye-eun

2-5 Bystander Student

Bang Min-ah

2-5 Student 1

Yu Si-an

2-5 Student 2

Jang Se-rim

2-5 Student 3

Lee Young-seok

2-5 Student 4

Ha-min

2-5 Student 5

Kim Hoe-chang

2-5 Student 6

Ha Bo-mi

2-5 Student 8

Kim Sun-je

2-5 Student 9

Yoo Ah-jin

2-5 Student 10

Gu Dong-woo

2-5 Student 11

Kim Seung-bu

2-5 Student 13

Jeong Ri-no

Student in Another Class

Bae Seaong-ho

Student in Another Class

Choi Chan

Male Teacher 1

Eom Ye-ji

Vice Chairperson

Kim Il-hyun

Ryu Gwang-pil's Aide

Hwa Sung

Jun-hyeong's Mother

Ji Yeon-ae

Gwang-su's Mother

Chu Eun-kyeong

Hak-jae's Mother

Kang Min-seung

Reporter in Principal's Office 1

Kwon Su-yeon

Reporter in Principal's Office 2

Park Kook-jin

Automobile Department 2

Shin June-woo

Automobile Department 3

Park Seok-sang

Automobile Department 4

Ahn Jae-hyung

Automobile Department 5

Cho Kang-hyuk

Automobile Department 6

Jang Jin-woo

Automobile Department 7

Lee Seop-geon

Automobile Department Martial Arts 1

Kang Jae-mook

Automobile Department Martial Arts 2

Hwang In-hwan

Automobile Department Martial Arts 3

Park Jun-woo

Automobile Department Martial Arts 4

Yoon Jae-min

Automobile Department Martial Arts 5

Ham Jae-hyun

Electrical Department 1

Lee Jae-yong

Electrical Department 3

Seo Ji-han

Electrical Department 4

Kim Han-yeong

Electrical Department 6

Hwang Woo-ju

Electrical Department 7

Choi Seong-jun

Electrical Department 8

Ko Jun-hyeong

Electrical Department 9

Lim Jae-min

Electrical Department Martial Arts 1

Im Da-bin

Electrical Department Martial Arts 3

Bae Hwan

Electrical Department Martial Arts 4

Kim Seo-pil

Electrical Department Martial Arts 2

Seo Eun-chong

Electrical Department Martial Arts 5

Jang So-mang

Female Teacher

Shin Yu-hwan

MZ Gangster 1

Ryu Han-jong

MZ Gangster 2

Ki Seong-gyu

MZ Gangster 3

Jang Doo-kyung

MZ Gangster 4

Yoo Young-bin

MZ Gangster 6

Jeong Jong-jin

MZ Gangster 7

Kim Seong-guk

MZ Gangster 8

Sim Gyeong-bo

MZ Gangster 9

Jin Hee-gyu

MZ Gangster 10

Kim Beom-chang

MZ Gangster 11

Park Chae-yi

Miss 1

Jang Eun-young

Miss 2

Joo Hyun-ji

Miss 3

Lee Han-bi

Miss 4

Hwang Chae-eun

Miss 5

Im Beom-su

Detention Center Student 1

Park Sung-hoon

Detention Center Student 2

Lee Jung-hyun

Detention Center Student 3

Ryu Jae-hyuk

Detention Center Student 4

Kim Da-yun

Bookstore Employee

Yang Ah-reum

Park Su-jin

유영은

3-4 Female Student 1

Lee Seo-yeon

3-4 Female Student 2

Geum A-yeon

3-4 Female Student 3

Kim Ha-yeon

3-4 Female Student 4

Kim Mi-jin

Soyeon Girls' High School Regular Student

Kim Se-yeon

Soyeon Girls' High School Regular Student

Kim So-wan

Soyeon Girls' High School Regular Student

Shin Soo-jin

Soyeon Girls' High School Regular Student

Won Ha-kyung

Soyeon Girls' High School Regular Student

You Xae-jin

Soyeon Girls' High School Regular Student

Jo Ha-min

Soyeon Girls' High School Regular Student

Ju Eon-ji

Soyeon Girls' High School Regular Student

Han Da-hee

Soyeon Girls' High School Regular Student

Seo Yun-jin

Ko Yeong-su's Daughter

Lee Sun-woo

Ko Yeong-su's Son

Lee Do-goon

Wrecker 1

Yoo Ji-hyuk

Public Prosecutor

Park Se-ki

Lawyer

Jeong Myung-gun

Prison Guard 1

Kim Se-joong

Prison Guard 2

Yang Min-ju

Soyeon Girls' High School Junior

Jeong Ho-won

Smoking Student 1

Kim Byung-tak

Smoking Student 2

Mimiminu

Mimiminu

Oh Dong-jin

Male Student

Lee Dong-ho

Private Teacher