Kim Sung-hyun
May 13, 1997 (28 years old) in South Korea
Kim Sung Hyun , formerly known as Yoo Jeong Woo, is a South Korean actor.
He made his acting debut in 2017 with a role in "Love After School" (방과후 연애), under the stage name Yoo Jeong Woo. He is currently managed by EL Park (이엘파크) and has decided to use his birth name.
(Source: MyDramaList)
Known For

Hospital Playlist
Yun-bok's Boyfriend

Missing Crown Prince
Han Sang Soo

Love Scene Number
Han Si Han

The Temperature of Language: Our Nineteen
Kim Do Yoon

Spring Turns to Spring
Je Im Soo [Rising Idol]

Secret Boutique
Wi Jeong Hyeok [20-year-old]

Mama Fairy and the Woodcutter
Um Kyung-sul

Boys Be Brave!
Kim Jin-woo

Love After School
Byeong Myeong-rok
Credits
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Baljjeo 2025★ NR
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Nuzabar 2024Boy★ NR
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Boys Be Brave! 2024Kim Jin-woo★ 8.3
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Missing Crown Prince 2024Han Sang Soo★ 6.5
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Gangwon-do 2021★ NR
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Love Scene Number 2021Han Si Han★ 4.4
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100% Era 2021Lee Shi Dae★ 6
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Hospital Playlist 2020Yun-bok's Boyfriend★ 8.5
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Kim Do Yoon★ 5.9
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Like 2019Seo Yoon Woo★ 3
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Secret Boutique 2019Wi Jeong Hyeok [20-year-old]★ 7.5
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Je Im Soo [Rising Idol]★ 6.8
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Um Kyung-sul★ 7
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Room Of Her Own 2018Soo Bin★ 5
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Love After School 2017Byeong Myeong-rok★ 4.3
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Ha Roo★ NR