Director
Screenwriter
Main Role
-
Seo Kang JunJung Hae Seong / Jung Si HyeonMain Role -
Jin Ki JooO Su A / O Bong JaMain Role -
Kim Shin RokSeo Myeong JuMain Role
Support Role
-
Jeon Bae SooAn Seok Ho [NIS team 4 team leader]Support Role -
Jo Bok RaeKo Yeong Hun [NIS team 4 agent]Support Role -
Yoon Ga YiPark Mi Jeong [NIS team 4 agent]Support Role -
Lee Seo HwanKim Hyeong Bae [NIS director]Support Role -
Im Chul HyungKong Jin Sang [NIS team 1 team leader]Support Role -
Kim Min JuLee Ye Na [Student council president]Support Role -
Park Se HyunAn Yu Jeong [Seok Ho’s daughter]Support Role -
Jang Sung BumPark Tae Su [Student council member]Support Role -
Lee Hyun SoHan Seung Jae [Student council member]Support Role -
Kim Sun MinJi Hyeon Jun [Student council vice president]Support Role -
Shin Jun HangLee Dong Min [Student]Support Role -
Jeong Soo HyunIm Yun Cheol [Student]Support Role -
Kang Pil JunSon Beom Sik [Student]Support Role -
Shin Ga EunChoi Su Jin [Student]Support Role -
Kim Seung BeomKim Ho Jin [Informant]Support Role -
Park Jin UPark Jae Mun [Byeongmun high school president]Support Role -
Oh YongBaek Gwang Do [Superintendent]Support Role -
Lee Min JiKim Ri An [P.E. teacher]Support Role -
Noh Jong HyunLee Jun Ho [Math teacher]Support Role -
Kim Young AhIm Cheong Ha [Su A's mother]Support Role -
Kim Soo JinJang Man Ok [Seok Ho's wife]Support Role -
Yun Chae BinYun Chae Rin [Student]Support Role
Guest Role
-
Kim Eui SungSeo Byeong Mun [Byeongmun high school former principal] (Ep. 1)Guest Role -
Li Yong Qun[Blackmarket buyer] (Ep. 1)Guest Role -
Kyung Ki Hyun[Restaurant hoodlum] (Ep. 1)Guest Role -
Oh Eui ShikJung Jae Hyun [Hae Seong's father] (Ep. 1-2, 5-7, 11-12)Guest Role -
Shin Dam SooPark Min Cheol [Assemblyman] (Ep. 1, 3-4)Guest Role -
Kang Soo Bin[Bully student] (Ep. 2)Guest Role -
Jang Se Rim[Bully student] (Ep. 2)Guest Role -
Jo Jae YoonKoo Sang Tae [Boss] (Ep. 2-4)Guest Role -
Shin Yeon SukChoi Bok Sun [Dong Min’s grandma] (Ep. 2-3)Guest Role -
Koo Min HyukKim Hyeon Ho [Security guard] (Ep. 2-3, 5-6)Guest Role -
Yu Ji WanJung Hae Seong [Child] (Ep. 2, 4-7, 9, 11-12)Guest Role -
Lee Dong GiKang Seong U [Bully] (Ep. 3)Guest Role -
Yong Jin[Detective] (Ep. 3)Guest Role -
Baek Kil Sung[Seong U’s dad] (Ep. 3)Guest Role -
Park Jung Eon[Student’s mom] (Ep. 3)Guest Role -
Lee Bum Chan[Ye Na’s driver] (Ep. 3, 5)Guest Role -
Su Hyun[Student] (Ep. 4)Guest Role -
Ahn Nae Sang[Neighborhood resident] (Ep. 4)Guest Role -
Park Seol HaO Su A [Child] (Ep. 4-7)Guest Role -
Kwon Tae WonChief editor Yun (Ep. 5)Guest Role -
Kim Sung Yong[CCTV room staff] (Ep. 5)Guest Role -
Lee Hwi Seo[Piano student] (Ep. 6)Guest Role -
Yoo Dam YeonMs. Do [Student’s parent] (Ep. 7-8)Guest Role -
Joo Seok Tae[Seung Jae’s dad] (Ep. 7-8)Guest Role -
Lee Seo YoungPark Min Ji [Su A’s student] (Ep. 8, 12)Guest Role -
Kim Dae Geun[Gang member] (Ep. 10)Guest Role -
Kim Nak Gyun[Internal affairs officer] (Ep. 10)Guest Role -
Chae Hoon[Gangster] (Ep. 1)Guest Role
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