Keys to the Heart: Reparto
Lee Byung-hun
Kim Jo-ha
윤여정
In-sook
박정민
Jin-tae
한지민
Ga-yool
김성령
Ms. Hong
Choi Ri
Soo-jung
백현진
Dong-soo
황석정
Chief Kang
박지연
Yougn In-sook
문숙
Bok-ja
오혜원
Bok-ja's Guard
이주영
Eun-ha
Ahn Seong-bong
Sky Lounge Manager
Park Ji-hoon
Tae-gu
박수오
Young Jo-ha
Yoon Yeong-gyun
Policeman
손우혁
Eun-ha's Boyfriend
Yang Jun-seok
Big High School Student
정윤하
Bok-ja's Guard
조관우
Moon Sung-gi
윤영균
Police substation officer