Kim Se-jeong
Kim Se-jeong is a South Korean singer, songwriter and actress whose work spans solo albums, I.O.I and gugudan, and dramas including Business Proposal and The Uncanny Counter.
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Se-jeong’s happenings, collected from public sources, plus her backstory and Starbook, where fans write.
Known for
Music
Weverse
Netflix / SBS
Netflix
YouTubeOverview
- Born
- August 28, 1996 · Gimje, South Korea
- Work
- Singer, songwriter and actress
- Breakout
- Second place on Produce 101 in 2016, followed by I.O.I
- Solo beginnings
- “Flower Way,” produced by Zico, in 2016
- First full album
- Door (2023)
- Agency
- BH Entertainment, since March 2026
Mini bio
How it started.
Se-jeong appeared on K-pop Star 2 in 2012 before returning to an audition stage as a Jellyfish trainee on Produce 101 in 2016. She finished second and debuted with I.O.I, then also performed with gugudan. Her solo single “Flower Way,” produced by Zico, followed that year.
Writing her own songs.
With Door in 2023, she made her first full album a personal project. She wrote lyrics for all 11 tracks and helped compose nine. In an interview with Bollywood Hungama, she described drawing on everyday notes and memories, including practising singing alone at a playground when she was young.
Across music and acting.
Her drama roles include Shin Ha-ri in Business Proposal and Do Ha-na in The Uncanny Counter. In 2026, she reunited with I.O.I for its tenth anniversary, while continuing her solo fan concerts and moving to BH Entertainment.
Creditschronological, newest first
Music
- 2026I.O.I : LOOPI.O.I member and vocalist
- 2025Solar SystemSolo artist
- 2023DoorSolo artist; lyrics on all 11 tracks and composition on nine
- 2016Flower WaySolo vocalist; produced by Zico
Television
- 2025Moon RiverPark Dal-i
- 2022Business ProposalShin Ha-ri
- 2020–2023The Uncanny CounterDo Ha-na
Awards
Quotes
I'm the kind of person who frequently writes down notes in my daily life.Kim Se-jeong, Bollywood Hungama
Explaining how she turns everyday thoughts and feelings into lyrics in an interview about Door.
Trivia
- “In the Rain” draws on memories of practising singing at a playground on rainy days, she told Bollywood Hungama.
- She told Marie Claire that she enjoys collecting cute key rings.
- For I.O.I’s anniversary comeback, she formed an extra practice group with Sohye and Chaeyeon to learn the dances.
- She describes carrying the sea in her heart, and told Marie Claire she has a sea-turtle tattoo.
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