김기해

Kim Chi-yeol

신명성

Im Woo-taek

신현수

Lee Chun-ho

임세미

Park Eun-young

안도규

Guk Young-su

김민철

Doh Su-chul

김수겸

Kwon Il-ha

노종현

Jang Young-hoon

우민규

Kim Duk-joong

Yeo Joo-ha

Kim You-jung

Ahn Da-eun

Kim In-hye

Lee Yeon

Roh Ae-sul

이연

Kwon Eun-bin

Yeon Bo-ra

Moon Sang-min

Wang Tae-man

문상민

최문희

Lee Na-ra

김소희

Lee Soon Yi

지민혁

Jo Young-shin

오기광

Jo Jang-su

신수현

Cha So-yeon

홍사빈

Woo Hee-rak

Shin Hye-ji

Choi Yeon-ju

Lee Soon-won

Kim Won-bin

이순원

Hwang Se-in

Yoo Ha-Na

Oh Se-eun

Hong Jun Hee

오세은

Kim Jung-Ran

Park So Yoon

Im So-yun

Science High School student

이종현

Park Hae-jun

김규리

Science high school student

이장원

[Math teacher]

손지나

[Yeon Bo Ra's mother]

Yoo Dam-Yeon

[Kim Chi Yeol's mother]

Jang Hyuk-jin

[Kim Chi Yeol's father]

장혁진

Shim So-young

[Kook Young Soo's mother]

심소영

김도연

[Kim Deok Joong's mother]

서지영

[Jang Young Hoon's mother]

Woo Hyeonju

[Kwon Il Ha's mother]

우현주

Lee Jung-min

Seo Ja Yoon

Shin Jae-hwi

Corporal Park

신재휘

Kim Won-hae

Choi Yong Sik

김원해

Ahn Chang-hwan

[Soldier]

안창환

Jang Hyun-sung

Minister of Defense Park Sang Man

장현성

성지루

Park Young Il

김예원

Angkko

한명환

[Soldier]

Shin Min-soo

[Teacher]

이동규

[Anchorman]

정동근

Park Jung Hoo

노성은

[Soldier]

Lee Dong-yong

Commander

이동용

음문석

Park Jin-soo

송요셉

Yoon Bum-sun

Yoo Sung-joo

Cha Moon-hyeok

유성주

박정연

Park Yoon-seo

유준

Park Jae-won

박진수

Lee Ji-min