Lee Kyu-Sung (이규성) is a South Korean actor, He was born on 16th February 1992 in South Korea. Lee Kyu-Sung first gained major recognition through his performance in the hit psychological drama It’s Okay to Not Be Okay (2020), where his emotionally layered portrayal earned audience appreciation. In 2021, he starred in Nobleman Ryu’s Wedding, a BL-themed historical drama that showcased his ability to convey sensitivity and nuance, and also made a memorable appearance in the popular fantasy-romance My Roommate Is a Gumiho.
In 2022, Lee took on a leading role in the youth-centric drama Hope or Dope, which further highlighted his range as an actor. His career continued to flourish in 2023 with impactful roles in Joseon Attorney: A Morality, where he played Dong-chi, and in the intense thrillers The Deal and Gyeongseong Creature, both of which broadened his dramatic portfolio.
Known For
In 2024, Lee appeared in the romantic drama The Midnight Romance in Hagwon and the modern fairytale-inspired Cinderella at 2 AM, proving his versatility across both grounded and whimsical narratives. Looking ahead to 2025, he is set to star in The Art of Negotiation, Dear Hongrang, and Eun Soo Good Day, promising even more layered and compelling performances.
Lee Kyu-Sung continues to evolve as one of South Korea’s most reliable and engaging character actors, steadily earning admiration from both fans and critics alike.

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