Agent Kim Reactivated: How So Ji-sub's Comeback Became 2026's Highest-Rated K-Drama

So Ji-sub Is Back — And He's Breaking Records

If you haven't heard about Agent Kim Reactivated yet, you're seriously missing out. The SBS action thriller starring So Ji-sub has become the highest-rated miniseries of 2026 after just three episodes, pulling in an impressive 18.8% nationwide rating in South Korea. That's not just good — that's dominating.

So Ji-sub, known for his iconic roles in Master's Sun, Oh My Venus, and Terius Behind Me, hadn't been in a drama for a while. His return in this spy-action thriller was highly anticipated — and it's delivering in spades. The drama also streams globally on Netflix, where it's been climbing the Top 10 charts across Asia, the Middle East, and parts of Europe.

What Makes Agent Kim Reactivated So Addictive?

The plot follows Kim Joon-ho (So Ji-sub), a former NIS agent who faked his death years ago to protect his family. When a terrorist organization resurfaces with ties to his past, he's forced to "reactivate" — hence the title. The show blends John Wick-style action sequences with classic K-drama emotional beats, and the result is pure adrenaline.

The supporting cast is stacked too. Kim Seo-hyung (Sky Castle) plays the cold-blooded villain, while Lee Joon-hyuk (Stranger) brings depth as Kim's former partner. The chemistry between the leads and the tight, 12-episode format means zero filler — every scene pushes the plot forward.

Why This Matters for K-Drama in 2026

2026 has been a massive year for K-dramas. We've seen titles like I Will Find You (Netflix's biggest series debut), The East Palace with Nam Joo-hyuk, and Love in Sync featuring Kim Myung-soo and Kang Min-ah. But Agent Kim Reactivated stands out because it's a broadcast drama (SBS) that's also crushing it on streaming — a rare feat that proves linear TV still has power when the content is right.

With only 9 episodes left, the ratings are expected to climb even higher. If you're into spy thrillers, emotional storytelling, and top-tier action choreography, this one's a no-brainer. Agent Kim Reactivated is streaming now on Netflix.