So Ji-sub Returns to SBS After 13 Years in Action Drama Kim Bu-jang

So Ji-sub is back on SBS — and the wait has been exactly thirteen years. His last SBS drama, Master's Sun, peaked at a 21.8% nationwide rating (Nielsen Korea), and that track record is a big part of why Kim Bu-jang was already charting on Fundex's drama buzz index before a single episode aired. It landed at No. 5 in the news category and No. 7 overall in the Week 1 June rankings — pre-premiere, on teasers alone. That kind of pre-air traction is rare, and it tells you the fandom memory around So Ji-sub on this network is still very much alive.

The drama is adapted from a Naver webtoon that repeatedly topped the platform's view charts during its run. The premise is a revenge-action setup built around fatherhood: Kim Bu-jang looks like an ordinary employee at a small savings bank, but he's a former special-ops agent who gets pulled back into the field to find his missing daughter Min-ji. The character poster leans hard into the contrast — glasses, a suit, a direct stare, and the tagline "Don't mess with the guy in glasses." There's also a bloodstain on the jacket that makes the everyday-versus-dangerous tension very literal. The first teaser opens on a desperate search, cuts to Min-ji's mother in a hospital bed, and ends with Kim Bu-jang deciding to stop waiting. It's a clean, emotionally legible hook.

What makes the ensemble interesting is that this isn't a solo-lead show. Choi Dae-hoon plays Seong Han-su, a taekwondo gym owner who is also a former gold medalist and secret agent — the reveal-under-the-surface structure mirrors Kim Bu-jang's own. Yoon Kyung-ho plays Park Jin-cheol, once known as "the god of the battlefield," now living as a devoted father to his daughter Da-bin. Both men are Kim Bu-jang's old friends and join his mission. The production has described the three leads' dynamic as a mix of bickering and genuine loyalty — there's a still of all three at a Korean BBQ spot where the mood shifts from laughter to dead-serious mid-scene, which is exactly the kind of tonal whiplash this genre does well when it lands.

The supporting cast rounds out what the production is calling an "appa universe" — a revenge-action world anchored in paternal bonds rather than the usual lone-wolf frame. Joo Sang-wook, Son Na-eun, and Kim Sung-kyu are also in the lineup. On the creative side, screenwriter Nam Dae-joong (30 Days, First Ride) and directors Lee Seung-young (Wonderful World, Tracer, Voice 2) and Lee So-eun are behind the camera. That director credit in particular is worth noting — Voice 2 and Tracer both leaned into procedural tension with strong action sequences, which suggests the fight choreography here will be more than background noise.

The production team has specifically flagged bare-handed combat and aerial kicks as set pieces to watch for — and said the full broadcast will go harder than anything shown in the teasers. Given that the webtoon source material built its audience on kinetic action sequences, that's the right promise to make upfront.

Kim Bu-jang premieres on SBS on the 26th at 9:50 PM, airing on Fridays and Saturdays. If you've been tracking So Ji-sub's career arc or you're just looking for a revenge-action drama with a cast that actually has chemistry on paper, this is the one to queue up from episode one — the pre-air buzz suggests it won't stay under the radar for long.