ActorYY Entertainment
Kim Seong-jeong
Kim Seong-jeong (김성정) is one of the younger YY Entertainment names turning stage discipline into fast-rising screen work. He first built visibility in the 2021 musical Hadestown, then started converting that control into camera roles with Netflix's Weak Hero Class 2, tvN's Head Over Heels, and Disney+'s The Miracles of the Namiya General Store.
What stands out is the speed of the jump. The recent credits place him inside streaming, cable, and youth-skewing drama lanes without locking him into one tone. Under YY Entertainment, he is being introduced as a performer who can move from musical-theater polish into contemporary ensemble work with real breakout upside.
1 articles4 creditsSouth Korean
Fans Also Ask
Who is Kim Seong-jeong?
Kim Seong-jeong is a South Korean actor who first built visibility through the musical Hadestown before moving into screen work. His recent run includes Weak Hero Class 2, Head Over Heels, and a role in Disney+'s The Miracles of the Namiya General Store, which gives him a stronger cross-platform profile very early in his career.
Which agency represents Kim Seong-jeong?
Kim Seong-jeong is represented by YY Entertainment. The company lists him on its official roster and has been the main public-facing management home attached to his shift from stage beginnings into higher-visibility drama and streaming work.
Was Kim Seong-jeong in Weak Hero Class 2?
Yes. Kim Seong-jeong appeared in Weak Hero Class 2 as Choi Yoo-joon. The part helped push his profile because the series carries strong youth-drama attention and put him in front of a much wider streaming audience than a stage-only career could deliver.
Did Kim Seong-jeong start in musical theatre?
Yes. His early public foundation came through the 2021 production of Hadestown. That background matters because it explains the control and rhythm in his screen work, especially now that he is moving between ensemble television roles and larger streaming projects.
What projects define Kim Seong-jeong's current rise?
The key titles in his current climb are Hadestown, Weak Hero Class 2, Head Over Heels, and The Miracles of the Namiya General Store. Together they show a young actor moving from stage craft into cable, Netflix, and Disney+ visibility in a short window.
