Behind Agent Kim Reactivated: The Cast Is Having More Fun Than the Script Lets On

The most-watched drama of 2026 isn’t just delivering on screen — its new behind-the-scenes footage shows a cast clearly enjoying themselves between takes. Agent Kim Reactivated just released a making-of video from Episodes 3 and 4, and it’s full of small, genuine moments.

What the Video Shows

In one scene, So Ji Sub jokes that his on-screen daughter Seo Su Min’s singing kept throwing him off his lines. When asked whether her character’s singing talent might be genetic, he playfully credits her mother rather than himself — while Seo Su Min clarifies for the camera that she doesn’t actually sing off-key like her character does.

Elsewhere, Yoon Kyung Ho surprises the set with a dramatic long-hair transformation, fully committing to a rock-and-roll persona so convincingly that So Ji Sub can barely keep a straight face while filming. Meanwhile, Choi Dae Hoon shows off serious technical skill in the show’s action sequences, working carefully with wire stunts and paying close attention to the precision of his movements.

Agent Kim Reactivate: Overview

Why Behind-the-Scenes Footage Matters

For a drama already breaking ratings records, making-of content like this does something ratings numbers can’t — it humanizes the cast and shows the effort behind the polish. Choi Dae Hoon’s dedication to stunt precision reinforces why the action sequences land so well on screen, while the lighter, joking moments between So Ji Sub and his co-stars give fans a reason to stay emotionally invested beyond the plot itself.

Behind-the-scenes content has become an increasingly important part of how television production is marketed globally, often used to deepen audience connection to a show well after the episode itself has aired.

For more K-drama behind-the-scenes content and ratings updates like this, check out the latest trending stories on TechnoSports.

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