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