Brave Citizen

Shin Hye-sun

(So Si-min)

Lee Jun-young

(Han Su-gang)

Park Jung-woo

(Ko Jin-hyoung)

Park Hyeok-kwon

(So Young-taek)

Cha Chung-hwa

(Lee Jae-gyeong)

Lee Chan-hyeong

(Lee Gwon-joong)

Bae Hyeon-jun

(Byeong-jin)

Cha Woo-min

(Lee Moon-gi)

Kim Sang-woo

(Park Jung-ho)

Lee Tae-hee

(Kim Jeong-gyu)

Lee Tae-gyun

(Byun Jae-hyeok)

Kang Anna

(Song Eun-gyo)

Kang Na-ru

(Min-ji)

Son Sook

(Jin-hyoung's Grandmother)

Lee Gyu-hoe

(Head Teacher)

Lee Jung-ok

(Seo Sang-woo)

Dong Hyo-hee

(English Teacher)

Nam Jeong-woo

(Math Teacher)

Kim Gyeong-ryong

(Principal)

Lee Do-eun

(Hye-gyeong)