Lee YongSu’s Career Change: From OnlyOneOf Idol to Actor

Lee YongSu, formerly known by his stage name Mill from the popular K-Pop group OnlyOneOf, is officially launching his acting career. On December 2, 2025, the agency Management Run announced it has signed an exclusive contract with the artist, signaling a significant career change for the former idol who is now ready to take on the screen under his real name.

From Global Idol to Aspiring Actor

Lee YongSu first entered the public eye in 2019 when he debuted as a member of the boy group OnlyOneOf. As OnlyOneOf Mill, he quickly gained a dedicated fanbase and contributed to the group’s rising international profile. His journey as an idol was marked by significant achievements, including a massive world tour that took OnlyOneOf to 33 cities across Asia, the Americas, Europe, and Australia. The group’s global recognition was further solidified by a recently completed and successful concert tour in North America, showcasing their widespread appeal.

Early Foray into Acting

Even during his busy schedule as a K-Pop idol, Lee YongSu demonstrated a passion and talent for acting. He made his acting debut while still active with his group, taking on a leading role in a web drama. This initial experience provided a glimpse into his potential as an actor and laid the groundwork for his future career change. His decision to fully transition into acting is a path many artists consider, often sparking discussions about career shifts in the industry.

A New Chapter with Management RUN

By signing with Management Run, Lee YongSu is making a clear statement about his commitment to becoming a professional actor. The agency’s announcement confirms he will now be promoting under his birth name, Lee YongSoo, leaving his idol persona behind. This move represents a fresh start and a deliberate step towards building a new identity in the entertainment world. Management Run is expected to provide comprehensive support to help him navigate this transition and establish a strong foothold in the acting industry. Fans are eagerly anticipating this new phase of his career.

What’s Next for Lee YongSu?

Lee YongSu is not wasting any time embarking on his new path. It has been revealed that he is already in preparation for his next big project. He is scheduled to travel for a location shoot in China for an upcoming acting role. This immediate engagement indicates a promising start to his acting career under his new agency. As an idol turned actor, Lee YongSu’s journey will be closely watched by fans and industry insiders alike, all curious to see how his talents translate from the stage to the screen.

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