Kim Yoo Jung

Kim Yoo Jung (김유정) has been one of Korea's most bankable screen talents for so long that it is easy to forget how early she started. She debuted as a child actress in 2003, turned into a genuine household name before finishing school, and then managed the harder transition from child-star nostalgia into adult lead status without losing the public's trust. That durability is rare. It is a big reason she still sits near the top of any conversation about Korean actresses who can carry both ratings dramas and streaming titles.

Her rise accelerated through period and youth titles, but Love in the Moonlight made her undeniable as a prime-time lead. From there she kept widening the range: Backstreet Rookie proved she could hold a modern romantic comedy, Lovers of the Red Sky reinforced her authority in fantasy-tinged sageuk, and 20th Century Girl expanded her international reach through Netflix. By the time My Demon and Dear X arrived, she was no longer selling only warmth or familiarity. She was pushing into darker emotional material with more control.

That is what makes the 2026 chapter feel important. Kim enters 100 Day Lie on tvN, produced by Studio Dragon, with the weight of long-term star power and a sharper adult screen identity than ever before. She was already the youngest person in the Top 10 of Forbes Korea's 2017 Power Celebrity list. Now she is operating as one of the few actresses of her generation whose past, present, and next project all still matter at scale.