Jin Goo as Park Jung-nam

Kim Tae-woo as Kim Dong-won

Kim Bo-kyung as Kim In-yeong

Lee Dong-kyu as Lee Su-in

Park Ji-a as Mother

Ko Joo-yeon as Asako

Kim Eung-soo as Major Akiyama

Jeong Ji-an as Nurse Choi

Choi Jae-hwan as Jae-hwan

Jeon Moo-song as Professor Park

David Lee McInnis as Onji Koshiro

Ye Su-jeong as Director

Um Tae-goo as Japanese Soldier

Kim Joo-hyun as Aoi

Uhm Ji-won as Professor Park's Daughter