Pemeran Brave Citizen

Shin Hae Sun (신혜선)

as So Si Min

Pemeran Utama

Lee Jun Young (이준영)

as Han Su Gang

Pemeran Utama

Park Jung Woo

as Go Jin Hyeong

Pemeran Pembantu

Cha Chung Hwa

as Lee Jae Gyeong

Pemeran Pembantu

Park Hyuk Kwon

as So Yeong Taek [Si Min's father]

Pemeran Pembantu

Lee Chan Hyeong

as Lee Gwon Jong

Pemeran Pembantu

Lee Joong Ok

as Seo Sang U

Pemeran Pembantu

Bae Hyeon Jun

as Lee Byeong Jin

Pemeran Pembantu

Cha Woo Min

as Lee Mun Gi [Su Gang's friend]

Pemeran Pembantu

Son Sook

as [Go Jin Hyeong's grandmother]

Pemeran Pembantu

Kang Min Ji

as Min Ji

Bintang Tamu

Kim So Hee

as Do Hui

Bintang Tamu

Lee Do Eun

as Hye Gyeong

Bintang Tamu

Kim Sang Woo

as Park Jung Ho

Bintang Tamu

Kang An Na

as Song Eun Gyo

Bintang Tamu

Kim Kyung Ryong

as [Principal]

Bintang Tamu

Ha Kyung Min

as [PE teacher]

Bintang Tamu

Lee Kyu Hoe

as [Vice-principal]

Bintang Tamu

Dong Hyo Hee

as [English teacher]

Bintang Tamu

Kim Hye Hwa

as [Su Gang's mother]

Bintang Tamu

Nam Jung Woo

as [Mathematics teacher]

Bintang Tamu

Lee Tae Gyun

as Byeon Jae Hyeok

Bintang Tamu

Dalpalan

Composer

Park Jin Pyo

Sutradara

Choi Ri Ho

as [Chauffeur]

Bit part

Kim Ki Bum

as [Basketball man]

Bit part

Kim Dong Hyuk

as [Su Gang's lawyer]

Bit part

Lee Ju Mi

as [Alteration owner]

Bit part

Oh Soo Hye

as [Convenience store owner]

Bit part