So Ji-sub's 'Agent Kim Reactivated' Is Smashing 5-Year K-Drama Ratings Records — Here's Why Netflix Can't Stop Talking About It

Just three episodes in, and it's already the biggest K-drama of 2026. So Ji-sub's action-revenge thriller Agent Kim Reactivated has exploded past every ratings benchmark this year, and honestly? The numbers are starting to look ridiculous.

According to Nielsen Korea, the SBS drama's third episode pulled an 18.8% nationwide rating on July 3, with a peak of 23%. That makes it the highest-rated Korean miniseries of 2026 — and the fastest drama in five years to break the 15% mark, a feat not seen since The Penthouse 3 back in 2021.

From Webtoon to Mega-Hit

Based on the popular Naver Webtoon Manager Kim by Jeong Jong-taek and Toy, Agent Kim Reactivated follows an ordinary father whose daughter suddenly vanishes. Forced back into the deadly world he thought he'd left behind, the former special agent goes full revenge mode to bring her home. It's Taken meets The Man from Nowhere, but with that signature K-drama emotional gut-punch.

The series is written by Nam Dae-joong and directed by Lee Seung-young and Lee So-eun, who balance bone-crunching action set-pieces with genuinely tender father-daughter flashbacks. The supporting cast is stacked: Choi Dae-hoon, Joo Sang-wook, Son Na-eun, Kim Sung-kyu, and a buzzed-about special appearance by Taecyeon (yes, that Taecyeon from 2PM) as an elite operative with a mysterious past connection to Agent Kim.

The So Ji-sub Comeback Nobody Expected

Let's be real — So Ji-sub has been a K-drama legend for over two decades, but nobody expected this kind of explosion. His last drama, 2025's Mercy For None, was solid. But Agent Kim Reactivated is on another planet entirely.

The ratings trajectory is genuinely insane:

• Episode 1 (June 26): 9.5% — strong debut
• Episode 2: 15.7% — a massive 65% jump
• Episode 3 (July 3): 18.8% — now the #1 miniseries of 2026

Industry watchers are already comparing its early ratings arc to legendary K-dramas like Sky Castle and The World of the Married. And with seven episodes still left in its planned 10-episode run, those numbers could go even higher.

Critics have pointed to the show's unique blend of raw action and emotional family storytelling as the secret sauce. The Korea Times noted that the drama "finds success by focusing on father's love," while fan communities online have been drawing parallels between Agent Kim's one-man war and iconic revenge protagonists from Korean cinema.

For international viewers, Agent Kim Reactivated is streaming globally on Netflix, with new episodes dropping weekly. If you haven't tuned in yet, now's the time — because everyone and their mother in Korea is already watching.

Will it break 25% before the finale? At this rate, don't bet against it. (≧◡≦)