“Agent Kim Reactivated” Becomes 2026’s Top-Rated Miniseries After Only Three Episodes

SBS’s new action revenge drama “Agent Kim Reactivated” has made an unusually fast climb to the top of Korea’s 2026 miniseries field, reaching a year-leading ratings mark after only three episodes on air.

The drama, led by So Ji Sub, aired its third episode on July 3 and recorded an average nationwide rating of 18.8 percent, according to Nielsen Korea figures cited by Soompi. That number made it the most-watched program of any kind in its Friday time slot and gave the series its personal best rating to date.

The figure is especially striking because the show is still in its opening stretch. Many Korean dramas build momentum gradually as word of mouth spreads, but “Agent Kim Reactivated” has reached a benchmark normally associated with established hits or finales. For a new miniseries to become the highest-rated entry of 2026 so far by episode three suggests that the drama’s premise, star power, and early pacing are connecting quickly with mainstream viewers.

A Fast Start For SBS

For SBS, the result gives the network a major early win in the competitive prime-time drama market. Ratings near the 20 percent range have become harder to achieve in a fragmented viewing environment where audiences split their attention between broadcast television, streaming platforms, short-form clips, and delayed viewing. A nationwide 18.8 percent rating is therefore more than a headline number; it signals a level of appointment viewing that remains rare for scripted television.

The series also benefits from a clean, easily understood hook. Based on a popular webtoon, “Agent Kim Reactivated” follows Manager Kim, played by So Ji Sub, as a seemingly ordinary father whose hidden past resurfaces when he must risk everything to protect his daughter. That setup combines familiar Korean drama elements: a parent-child emotional core, a secret identity, revenge stakes, and action built around a lead character who has more history than those around him realize.

Those ingredients can travel well across age groups. Viewers looking for intense action have a clear reason to watch, while audiences drawn to family-driven stories can follow the emotional urgency behind the fights and confrontations. The drama’s strong start indicates that the balance is working so far, with the central rescue-and-protection premise giving the action a personal reason to matter.

So Ji Sub’s Return To High-Impact Drama

So Ji Sub’s presence is another important part of the drama’s appeal. The actor has long been associated with roles that combine restraint, intensity, and emotional weight, and “Agent Kim Reactivated” appears designed around those strengths. A character who looks ordinary on the surface but carries a dangerous past gives him room to play both quiet domestic tension and high-pressure action.

That contrast is central to why the show is drawing attention. The title itself promises a reawakening: a man known as Manager Kim is not simply reacting to danger, but being forced back into a life he may have tried to leave behind. When that kind of character is tied to a daughter in peril, the drama can move quickly from mystery to urgency without needing a long setup.

The webtoon foundation may also be helping the series gain traction. Adaptations arrive with built-in curiosity from readers, but television success still depends on whether the live-action version feels immediate and accessible. The early ratings suggest that the SBS version has not only attracted existing fans of the source material, but also reached viewers who may be discovering the story for the first time.

What The Ratings Mean Now

The bigger question is whether “Agent Kim Reactivated” can maintain or expand its audience after such a rapid breakthrough. Early ratings peaks can create pressure, because viewers will expect the drama to keep delivering set pieces, emotional turns, and new information about Manager Kim’s past. If the series can deepen its characters while sustaining the suspense, its third-episode record may become the start of a longer ratings run rather than a one-week spike.

For the Korean drama industry, the result is another reminder that broadcast hits are still possible when a show gives audiences a strong reason to tune in together. Streaming has changed viewing habits, but a tightly packaged genre drama with a bankable lead and clear emotional stakes can still generate live-viewing momentum.

At this stage, “Agent Kim Reactivated” has already earned a place in the 2026 ratings conversation. With only three episodes aired, the drama has moved from promising newcomer to the miniseries benchmark of the year so far. Its next episodes will show whether the show can turn that early surge into sustained dominance.