Agent Kim Reactivated Just Became the Highest-Rated K-Drama of 2026 — Here's Why So Ji-sub's Comeback Is Breaking Records

So Ji-sub's 'Agent Kim Reactivated' Hits 23.1% Ratings — K-Drama's Biggest Hit of 2026

When Netflix and SBS premiered Agent Kim Reactivated at the end of June 2026, expectations were high but not astronomical. So Ji-sub was returning to K-dramas after a hiatus, and the action-thriller genre doesn't always dominate domestic ratings. But something extraordinary happened: the show didn't just perform — it exploded. As of August, Agent Kim Reactivated has reached an impressive 23.1% nationwide rating on Nielsen Korea, making it the highest-rated Korean drama of 2026, overtaking everything from Our Sticky Love to When Life Gives You Tangerines.

What Makes Agent Kim So Addictive?

The premise is deceptively simple: Agent Kim is a retired intelligence operative pulled back into the game when a past mission comes back to haunt him. But the execution is anything but ordinary. The show masterfully blends high-octane action sequences with genuine emotional depth, and So Ji-sub's charisma is absolutely magnetic. His chemistry with the supporting cast — including standout performances from Park Ji-hyun — elevates what could have been a standard spy thriller into something genuinely special. The show also benefits from smart writing that keeps viewers guessing. Each episode ends with a revelation or twist that makes binge-watching almost impossible — you need to know what happens next immediately. The webtoon adaptation has been praised for expanding on the source material rather than simply adapting it panel by panel.

A Global Phenomenon

On Netflix, Agent Kim Reactivated has been equally dominant, charting in the top 10 across multiple countries and rivaling One Piece for viewership hours. Forbes has highlighted how the show's success signals a shift in K-drama storytelling — audiences are craving complex, adult-oriented thrillers alongside the romance-heavy fare that typically dominates. The show's influence is already being felt across the industry. Other Korean networks are greenlighting similar action-thriller projects, and Netflix has reportedly fast-tracked discussions for a second season. For So Ji-sub, who's been selective about his projects in recent years, this comeback is a triumphant reminder of why he's considered one of Korea's finest actors. Agent Kim Reactivated isn't just a hit — it's a statement that K-dramas can compete with any thriller, anywhere in the world.