On screen
Cast
55 credited performers
Kim Ki-hae
Kim Chi-yeol
Shin Myung-sung
Im Woo-taek
Shin Hyun-soo
Lee Chun-ho
Im Se-mi
Park Eun-young
Ahn Do-gyu
Guk Young-su
Kim Min-chul
Doh Su-chul
Kim Su-gyeom
Kwon Il-ha
Ro Jong-hyun
Jang Young-hoon
Woo Min-kyu
Kim Duk-joong
Yeo Joo-ha
Kim You-jung
Ahn Da-eun
Kim In-hye
Lee Yeon
Roh Ae-sul
Kwon Eun-bin
Yeon Bo-ra
Moon Sang-min
Wang Tae-man
Choi Moon-hee
Lee Na-ra
Kim So-hee
Lee Soon Yi
Ji Min-hyuk
Jo Young-shin
Oh Gi-gwang
Jo Jang-su
Shin Su-hyun
Cha So-yeon
Hong Xa-bin
Woo Hee-rak
Shin Hye-ji
Choi Yeon-ju
Lee Soon-won
Kim Won-bin
Hwang Se-in
Yoo Ha-Na
Oh Se-eun
Hong Jun Hee
Kim Jung-Ran
Park So Yoon
Im So-yun
Science High School student
Lee Jong-hyun
Park Hae-jun
Kim Gyu-ri
Science high school student
Lee Jung-min
Seo Ja Yoon
Shin Jae-whi
Corporal Park
Sung Ji-ru
Park Young Il
Park Jung-yeon
Park Yoon-seo
Lee Jang-won
[Math teacher]
Son Ji-na
[Yeon Bo Ra's mother]
Yoo Dam-Yeon
[Kim Chi Yeol's mother]
Jang Hyuk-jin
[Kim Chi Yeol's father]
Shim So-young
[Kook Young Soo's mother]
Kim Do-yeon
[Kim Deok Joong's mother]
Seo Ji-young
[Jang Young Hoon's mother]
Woo Hyun-ju
[Kwon Il Ha's mother]
Kim Won-hae
Choi Yong Sik
Ahn Chang-hwan
[Soldier]
Jang Hyun-sung
Minister of Defense Park Sang Man
Kim Ye-won
Angkko
Han Myeong-hwan
[Soldier]
Shin Min-soo
[Teacher]
Lee Dong-kyu
[Anchorman]
Jung Dong-geun
Park Jung Hoo
Noh Sung-eun
[Soldier]
Lee Dong-yong
Commander
Um Mun-suk
Park Jin-soo
Song Yo-sep
Yoon Bum-sun
You Seong-joo
Cha Moon-hyeok
Yoo Jun
Park Jae-won
Park Jin-soo
Lee Ji-min