It was the first time in his 30-year acting career that Joo Sang-wook played a full-fledged villain. Long known for his gentlemanly and warm screen image, the veteran actor shed that persona to portray a ruthless, unhinged antagonist, winning praise from viewers. SBS' Friday-Saturday drama "Agent Kim Reactivated," which concluded on July 25, wrapped up with a nationwide viewership rating of 23 percent, according to Nielsen Korea. The series stood out at a time when TV dramas across terrestrial, cable and general programming channels have struggled to attract audiences. Speaking in an interview before the finale, Joo said, "I never expected it to become such a huge hit. The director told me this project would be a turning point in my acting career, and that's exactly what happened. It feels wonderful to experience this kind of success again." The drama also found a global audience. According to Netflix's official Tudum website, "Agent Kim Reactivated" topped the Global Top 10 chart in the non-English TV category for three consecutive weeks. Asked whether he has felt the impact of the show