Cast 55
Kim Ki-haeKim Chi-yeol
Shin Myung-sungIm Woo-taek
Shin Hyun-sooLee Chun-ho
Im Se-miPark Eun-young
Ahn Do-gyuGuk Young-su
Kim Min-chulDoh Su-chul
Kim Su-gyeomKwon Il-ha
Ro Jong-hyunJang Young-hoon
Woo Min-kyuKim Duk-joong
Yeo Joo-haKim You-jung
Ahn Da-eunKim In-hye
Lee YeonRoh Ae-sul
Kwon Eun-binYeon Bo-ra
Moon Sang-minWang Tae-man
Choi Moon-heeLee Na-ra
Kim So-heeLee Soon Yi
Ji Min-hyukJo Young-shin
Oh Gi-gwangJo Jang-su
Shin Su-hyunCha So-yeon
Hong Xa-binWoo Hee-rak
Shin Hye-jiChoi Yeon-ju
Lee Soon-wonKim Won-bin
Hwang Se-inYoo Ha-NaOOh Se-eunHong Jun HeeKKim Jung-RanPark So Yoon
Im So-yunScience High School student
Lee Jong-hyunPark Hae-jun
Kim Gyu-riScience high school student
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]
Lee Jung-minSeo Ja Yoon
Shin Jae-whiCorporal Park
Kim Won-haeChoi Yong Sik
Ahn Chang-hwan[Soldier]
Jang Hyun-sungMinister of Defense Park Sang Man
Sung Ji-ruPark Young IlKKim Ye-wonAngkko
Han Myeong-hwan[Soldier]SShin Min-soo[Teacher]
Lee Dong-kyu[Anchorman]
Jung Dong-geunPark Jung Hoo
Noh Sung-eun[Soldier]
Lee Dong-yongCommander
Um Mun-sukPark Jin-soo
Song Yo-sepYoon Bum-sun
You Seong-jooCha Moon-hyeokPPark Jung-yeonPark Yoon-seoYYoo JunPark Jae-won
Park Jin-sooLee Ji-min
