강하늘

Yun Dong-ju

박정민

Song Mong-gyu

김인우

Detective

최홍일

Dong-ju's Father

김정팔

Mong-gyu's Father

최희서

Kumi

신윤주

Lee Yeo-jin

김우진

Hyochi

민진웅

Kang Cheo-joong

박명신

Mong-gyu's Mother

이선주

Dong-ju's Mother

Seong Hong-il

Myung Hee-jo

최종률

Grandfather

Lee Bit-na

Dong-ju's Sister

문성근

Jung Ji-yong

Choi Jung-hun

Moon Ik-hwan

정준원

Korean Student

조하석

Soldier