Kim Ko-woon (; born 30 April 1994), known professionally as Chae Seo-jin (), is a South Korean actress. She started her career as a young actress in Over the Rainbow (2006). She is known to be Kim Ok-vin's sister. In May 2016, Chae decided to use Chae Seo-jin as her stage name instead of her birth name, Kim Ko-woon.
Career Chae started her acting career in 2006 where she played young Jung Hee-soo in Over the Rainbow.
In 2011, Chae made her musical debut in Catch a Timid Man.
In 2014, Chae made her big screen debut in the movie My Brilliant Life.
In 2015, Chae was cast as the female lead role in the movie Overman, which was played at the 20th Busan International Film Festival.
Chae was cast in several films in 2016; namely Write or Dance, Curtain Call, and Will You Be There?. The same year, Chae starred in the web drama Be Positive alongside EXO's Do Kyung-soo.
In 2017, Chae was cast in the teen drama Girls' Generation 1979.
In 2018, Chae starred in the romantic comedy drama Coffee, Do Me a Favor.
In 2019, Chae made a short appearance in the romantic fantasy drama Melting Me Softly along with Ji Chang Wook. The same year, Chae starred in the romantic drama Yeonnam Family as the main lead alongside Na In Woo.
Personal life On March 14, 2024, Ghost Studio announced that Chae would marry her non-celebrity boyfriend in April. The couple married in a private ceremony on April 7, 2024.
Filmography Film YearTitleRole2014My Brilliant LifeLee Seo-ha2016OvermanSoo-hyeon / Se YoungCurtain CallSeul-giWill You Be There?Young Yeon-ah2017Write or DanceGo-un 2022 Late Night Cafe : Missing Honey Namgoong yoon
Television series YearTitleRoleNotes2006Over the Rainbowyoung Jung Hee-soo2016Be PositiveBang Hye-jungWeb drama2017Girls' Generation 1979Park Hye-jooMain Lead2018Coffee, Do Me a FavorOh Go-woonMain Lead2019Melting Me SoftlyNa Ha-yeong (young)Supporting Yeonnam FamilyJeong Joo YeonMain Lead
Music video appearances YearAlbumSongArtist2015Yoon Jong Shin Monthly Project 2015 August"The Missing Girls"Yoon Jong-shin feat. Lucite Tokki
Musical YearTitleRole2011Catch a Timid ManLee Sang-hae
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