Keys to the Heart
2018-01-17An older brother is a washed-up boxer. His younger brother is a genius pianist with physical disability. The brothers make up through their mother who is full of stories of her past.

An older brother is a washed-up boxer. His younger brother is a genius pianist with physical disability. The brothers make up through their mother who is full of stories of her past.

Kim Jo-ha
Lee Byung-hun

In-sook
Youn Yuh-jung

Jin-tae
Park Jeong-min

Ga-yool
Han Ji-min

Ms. Hong
Kim Sung-ryung

Soo-jung
Choi Ri

Dong-soo
Bek Hyun-jin

Chief Kang
Hwang Seok-jeong

Yougn In-sook
Park Ji-yeon

Bok-ja
Moon Sook

Bok-ja's Guard
Oh Hye-won

Eun-ha
Lee Zoo-young

Sky Lounge Manager
Ahn Seong-bong

Tae-gu
Park Ji-hoon

Young Jo-ha
Park Soo-oh

Policeman
Yoon Yeong-gyun

Eun-ha's Boyfriend
Son Woo-hyuk

Big High School Student
Yang Jun-seok

Kim Sang-Wook

Bok-ja's Guard
Jung Yun-ha

Moon Sung-gi
Jo Kwan-woo

Police substation officer
Yoon Young-kyun
Junior Hgh School Bully 1
Lee Jun-ha

Event Assistant
Park So-eun