Pemeran Keys to the Heart

Lee Byung Hun (이병헌)

as Jo Ha

Pemeran Utama

Park Jeong Min (박정민)

as Jin Tae

Pemeran Utama

Youn Yuh Jung

as In Sook

Pemeran Pembantu

Han Ji Min (한지민)

as Ga Yool

Pemeran Pembantu

Kim Sung Ryung

as Madame Hong

Pemeran Pembantu

Moon Sook

as Bok Ja

Pemeran Pembantu

Choi Ri

as Byun Soo Jung

Pemeran Pembantu

Hwang Seok Jeong

as Department Head Kang

Pemeran Pembantu

Baek Hyun Jin

as Dong Soo

Pemeran Pembantu

Jo Kwan Woo

as Moon Sung Ki

Pemeran Pembantu

Park Ji Hoon

as Lee Tae Goo

Pemeran Pembantu

Kim Seo Won

as [Junior]

Pemeran Pembantu

Ryu Je Seung

as [Boxing coach]

Pemeran Pembantu

Richard Kim

as [Hospital executive]

Pemeran Pembantu

Hong Suk Youn

as [Jo Ha's father]

Pemeran Pembantu

Park Min Young

as [Butler at Bok Ja's home]

Pemeran Pembantu

Kang Chung Hun

as [News anchor]

Bintang Tamu

Seo Min Joo

as [Slender woman 1]

Bintang Tamu

Park So Eun

as [Event assistant #2]

Bintang Tamu

Lee Joon Ha

as [Middle school bully 1]

Bintang Tamu

Im Ji Min

as [Sung Ki's secretary]

Bintang Tamu

Kim Deok Min

Asisten Sutradara

Hwang Sang Jun

Composer

Kim Sun Min

Editor

Choi Sung Hyun

Screenwriter & Sutradara

Park Ji Yeol

as [Gentleman #3]

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Lee Sang Joon

as [Competition participant]

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Ahn Sung Bong

as [Sky lounge manager]

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Lee Sung Hye

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Kwon Gwi Bin

as [Slender woman #2]

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Nam Jung Woo

as [Record shop employee]

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Lee Ru Tam

as [High school student]

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Park Soo Oh

as Jo Ha [Young]

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Park Jae Hong

as [Gentleman #2]

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Yook Jin Soo

as [Martial Arts Club Manager]

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Lee Joo Young

as Eun Ha

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Yoo Jung Ho

as [Welfare Center teacher]

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Park Ji Yun

as Yougn In Sook

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Baek Seo Yi

as [Restaurant employee]

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Lee Jung Ho

as [Martial arts athletic club member 3]

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Kim Byung Chun

as [Security guard]

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Yang Jun Suk

as [Big high schol student]

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Jung Yun Ha

as [Bok Ja's entourage #3]

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Oh Hye Won

as [Bok Ja's entourage]

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Heo Ji Na

as [Bok Ja's guard #1]

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Ju Seo Eun

as [Bok Ja's entourage]

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Woo Hyun Seo

as [Bok Ja's housemaid]

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