Jang Sung-yoon
Jang Sung-yoon (장성윤) is a South Korean actress best known as Kim Seong-yun in The Trauma Code: Heroes on Call (2025).

Beyond the screen.
Jang Sung-yoon (장성윤) is a South Korean actress born on 17 February 1998. She works in Korean television and is known for her roles in drama and comedy series.
Her best-known work in the Oxfea catalogue is Kim Seong-yun in The Trauma Code: Heroes on Call (2025), a drama and comedy series about a trauma care team.
Jang Sung-yoon continues to take roles in Korean dramas, and fans can find her work and drama guides on Oxfea. In the Oxfea catalogue, The Trauma Code: Heroes on Call is listed as a 2025 drama and comedy series.
A career, chapter by chapter.
Selected drama roles
- The Trauma Code: Heroes on Call — Kim Seong-yun
Explore the drama guides
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- The Trauma Code: Heroes on Call — 2025 · Drama · Comedy
Stories to find them in.
Selected credits in the Oxfea collection.
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