On screen
Cast
321 credited performers
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 Jong-soo
Hwang Gi-tae
Lee Bong-joon
Cho Gyu-cheol
Lee Yeo-jin
Anchor
Baek Ji-hye
Gi-tae's Assistant
Choi Jae-sup
Prison Officer Kang (uncredited) (archive footage)
Jin Si-won
Reporter 3
Kim Eun-hee
Reporter 4
Kim Beong-choun
Lee Cheol-myeon
Lee Seo-han
Seo Beom-su
Lee Ho-cheol
Reporter 1
Song Seon-hyo
Reporter 2
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
Leem Hyun-mook
Yun Min-su
Yoon Tae-sik
Lee Du-hyeon
Choi Hyun-joon
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
Bae Seong-il
Prison Warden
Jo Jae-young
Detective
Shin Dong-jun
Lee Jong-su
Lee Seung-noh
Jung Hyun-tae
Lee Jung-hwa
Ms. Min
Moon Dong-ho
Seo Jin-hyeok
Lee Chan-yong
Kim Gyeong-min (uncredited) (archive footage)
Lee Seung-gyu
Ryu Jun-hyeong (uncredited) (archive footage)
Kim Do-gun
Kim Gwang-su
Kang Joon
Kim Hak-jae (uncredited) (archive footage)
Choi Sol-hee
Assemblywoman
Jeong Myung-gun
Prison Guard 1
Kim Dong-ryul
Red Name Tag
Kim Jeong-hoon
Red Name Tag
Kim Hyeon-ho
Red Name Tag
Lee Won-jun
Red Name Tag
Jang Min-jun
Red Name Tag
Jeong Gyu-yeong
Red Name Tag
Park Jin-su
Newly Admitted Inmate
Kim Da-hwi
General Inmate
Kim Yeon-jun
General Inmate
Park Eun-ho
General Inmate
Park Jae-beom
General Inmate
Seo Seung-jae
General Inmate
Yang Young-moon
General Inmate
Oh Dae-yang
General Inmate
Youn-ha
General Inmate
Jang Seong-won
General Inmate
Han Zi-hun
General Inmate
Hong Sung-bae
General Inmate
Lee Yeon-xin
General Inmate
Kim Yu-bin
Go Seung-il
Lee Jong-chan
Jeon Ju-won
Seok Hyoun-sung
Lee Sang-cheol
Kwon Ki-hyun
Yoon Dae-hyun
Kim Min-seong
Jinwon High School Student 1
Jeon Ye-ji
Jinwon High School Student 2
Song Yeon-woo
Jinwon High School Student 3
Lee Ji-ho
Jinwon High School Student 4
Han Jae-eun
Jinwon High School Student 5
Ahn Su-bin
Jinwon High School Student 6
Kim Min-seok
Examiner
Jeong Soo-hyun
Park Dae-seok
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
U-jin's Mother
Kim Ye-rin
Schoolgirl 1
Kwon Dong-ho
U-jin's Father
Kang Ji-eun
Female Principal
Bae Jae-young
Lee Jae-yun
Jo Eun-sol
Shin Ji-su
Jo Jun-ho
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
Private Tutoring Coordinator
Cho Yeon-jin
Yeon-jun's Mother
Chang Eun-a
Da-hui's Mother
Kim Da-huin
Attorney Yoon
Lee Ga-yeon
Ham Yu-ri
Jeon Seung-hoon
Seo Tae-hoon
So Yi-han
Chukmyeong Foreign Language School Student 1
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
Park Hyeon-ung's Father
Kim Tae-yoo
Institute Staff
Ok Il-jae
Prosecution Official
Han Ki-jang
Lawyer
Lee Ji-hae
Seo-jun's Mother
Choi E-jun
Schoolboy 1
Kim Eun-ho
Schoolboy 3
Park Si-hyun
Schoolboy 4
Kim Seong-yong
Bank Branch Manager
Han So-hyun
Bank Teller
Lee Eun-joo
Prosecutor
Choi Young-min
Ministry of Education Staff 1
Park Gang-to
Ministry of Education Staff 2
Han Sun-ae
Student's Parent 3
Lee Do-eun
Student's Parent 2
Kim Soo-yeong
Student's Parent 1
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
Head of the Women and Youth Division
Ahn Chan-woong
Detective of the Women and Youth Division
Lee Hyung-joo
Homeroom Teacher
Kim Yu-bin
Female Student from Hyeonjin Middle School 1
Cho Hyen-woo
Jae-yun's Father
Lee Seo-won
Jae-yun's Mother
Chun Myung-woo
Black Suit
Choi Jun-kyu
Gang Member 2
Jeon Kyu-won
Bongo Van Female Student 1
Seo Hye-min
Female Teacher
김은영
School Nurse
Jeon Yeong
Seong-gu's Mother
Park Ji-won
Chi-ho's Mother
Eom Ju-yeon
Chi-ho's Younger Sister
Jeong Jong-yeol
Committee Chairman
Park Ryang-woo
Hoodie Man
Cho Tae-min
Big Guy 1
Baek Na-gyeong
Soyeon Girls' High School Female Student 1
Park Jae-hwi
Yeong-cheol
Son Da-yeon
Han-rim Past Female Student 1
Park Kwan-woo
Han-rim Past Male Student 1
Kim Dae-geun
MZ Gangster 5
Jeon Young-woon
MZ Gangster 12
Lee So-geum
Detective 1
Park Seung-hyun
Detective 2
Lee Seung-jin
Teacher 1
Han Nu-ri
Female Teacher
Seo Gwang-jae
Chairperson
Lee Jae-woong
Security Guard
Kim Kwan-jang
Jinwon High School Parent 1
Ha Na-ri
Jinwon High School Female Teacher 1
Dok Ko-kwang
Jinwon High School Male Teacher 2
Seo Ji-ho
Soyeon Girls' High School Female Student 2
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
Yoo Young-eun
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
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
Oh Dong-jin
Male Student
Mimiminu
Mimiminu
Lee Dong-ho
Private Teacher
Lee Eun-hak
Chukmyeong Foreign Language School Student 2
Lee Ah-hyun
Chukmyeong Foreign Language School Student 3
Song So-yeon
Chukmyeong Foreign Language School Student 4
Gang Dong-yun
Chukmyeong Foreign Language School Student 5
Kim Hyo-jin
Park Hyeon-ung's Mother
Lee Jun-ryeol
Male Student Accepted into University
Jo Hyo-eun
Han-rim Past Female Student 2
Kim Yun-chan
Principal
Sean Cho
Detective
Lee Sae-ro-mi
Judge
Lee Su-ho
Kang Seo-jun
Lee Geon-ha
Schoolboy 2
Joung Yoon-ah
Schoolgirl 2
Choi Yeon-hwa
Female Teacher 1
Ahn Hye-jin
Female Teacher 2
Lee Ji-yeon
Clinical Psychologist
Ahn Do-zin
Ji-seon's Boyfriend
Lee Ha-young
Ministry of Education Staff 3
Kim Chae-eun
Oh Yun-jin
Seo Jeong-min
Male Student from Hyeonjin Middle School 1
Oh Min-wook
Male Student from Hyeonjin Middle School 2
Lim Jin-sung
Male Student from Hyeonjin Middle School 3
Lee Ye-jin
Female Student from Hyeonjin Middle School 2
Mo Yoon-hee
Female Student from Hyeonjin Middle School 3
Jang Pil-sang
Teacher
Oh Joo-suk
Jinwon High School Security Guard
Na Kyung-chul
Reporter
Ill-ho
Gang Member 1
I-geon
Gang Member 3
Oh Tae-min
Schoolboy 1
Ju Yi-jun
Schoolboy 2
Son Sang-jun
Schoolboy 3
Park Chan-yong
Bathroom Gambling Man
Seong Yu-Na
Classroom Gambler
Kim Ju-hyun
Bongo Van Male Student
Oh Yu-jin
Bongo Van Female Student 2
Jo Seo-yeon
Jo Da-hui
Lee Si-woo
Middle Schooler Hyeon-min
Park Gwang-seo
Male Teacher
Lee Chung-ho
Geun-dae's University Classmate
Heo Jin-woo
Big Guy 2
Yeo Dae-hyun
Detective
Cho Seong-woo
Master Distributor 2
Shin Woo-chan
Master Distributor 3
Jin Woo-jin
Basketball Club Member
Cho Hyun-woo
Basketball Club Member
Choi Go-su
Basketball Club Member
Gang In-han
Basketball Club Member
Kim Do-yeon
Basketball Club Member
Hur Yoon-su
Basketball Club Member