Ko Yu-rim is a star national fencer and, at first, Na Hee-do's idol and rival. Cool and accomplished where Hee-do is impulsive, she carries the weight of being a celebrated athlete from a family under financial strain, which shapes her guarded and competitive exterior.
As the two fencers are repeatedly thrown together in training and competition, their rivalry slowly softens into a genuine and complicated friendship. Yu-rim's arc explores the pressures placed on young athletes, the burden of expectation, and the way fierce competitors can become each other's closest companions.
Over the series, Yu-rim grows beyond her early defensiveness, and her bond with Hee-do becomes one of the show's most valued relationships. Her journey adds emotional depth to the sports storyline and rounds out the drama's portrait of ambition and youth in a difficult era.
Ko Yu-rim is one of the central figures in Twenty-Five Twenty-One, a romance/coming-of-age/drama/korean/sports series that aired on tvN from 2022. Within the narrative of Twenty-Five Twenty-One, Ko Yu-rim serves as a pivotal character whose decisions and relationships drive key story arcs throughout 2022 (Season 1). The character's journey has been central to many of the show's most memorable and discussed moments.
Portrayed by Bona, Ko Yu-rim has become one of the most recognizable characters in modern television. Bona's performance brings nuance and depth to the role, creating a character that resonates with audiences on both intellectual and emotional levels. Bona's work has been recognized with 1 major award, reflecting the critical acclaim their portrayal has received.
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Ko Yu-rim is played by Bona, a South Korean singer and actress who is a member of the girl group WJSN, also known as Cosmic Girls. The role was among her notable acting credits.
She begins as Na Hee-do's admired rival on the fencing team, but over the course of the series their competitive relationship develops into a close and meaningful friendship.
