Park Seo Joon Leads Disney+'s Crime Noir 'Born Guilty' in His Darkest Role Yet

Park Seo Joon will lead Disney+'s crime noir drama Born Guilty, a webtoon adaptation set in 1980s Seoul during the chaotic redevelopment boom ahead of the 1988 Olympics, as confirmed by Disney+ on March 30, 2026 alongside photos from the cast's first script reading. Um Tae Goo and Jo Hye Joo round out the main trio in a series directed by Hong Won Chan, the filmmaker behind Deliver Us from Evil (2020) and screenwriter of The Chaser (2008). The project, previously titled I Am a Sinner, adapts the popular 2022 Kakao Webtoon by Lee Moo Ki and is currently in production with a 2027 premiere window. For Park Seo Joon, this marks a full pivot from the romantic leads that built his reputation, a move that positions him as one of the most versatile Korean actors working in the streaming era. The genre shift is deliberate, and the team behind it should make anyone paying attention take notice.

A Villain Role That Rewrites Park Seo Joon's Career Playbook

Park Seo Joon has spent the better part of a decade building an image most actors would kill for. From the scrappy entrepreneur of Itaewon Class to the charming CEO of What's Wrong with Secretary Kim, his brand was the likable, morally grounded lead who makes you root for him within ten minutes of screen time. His Hollywood crossover in The Marvels (2023) kept him in hero territory too. Born Guilty torches that playbook entirely. He plays Paengi, a notorious villain described as embodying "the desires of the era," according to Soompi's report on the casting confirmation. In the story, Paengi is a mysterious figure who surfaces in a district consumed by redevelopment frenzy and pulls everyone around him into the drug trade. "It's both a character and a story I've been waiting for," Park Seo Joon said at the script reading. "As an actor, it's a project I can't help but want. I think I can show a new side of myself through the role of Paengi."

The significance here goes beyond one role. K-drama leading men rarely make this kind of lateral move at the peak of their commercial power. Park Seo Joon just wrapped Surely Tomorrow on JTBC (December 2025 to January 2026), another romantic drama, and could easily coast on that formula for another five years. Instead, he chose a crime noir where his character is the antagonist of his own story. K-drama fans who have tracked his career since his early breakout roles will recognize this as his biggest creative gamble yet.

Um Tae Goo and Jo Hye Joo Complete a Powerhouse Trio

Um Tae Goo joins the cast as Saengdak, a North Gang member whose life implodes after he betrays his organization to accept Paengi's high stakes offer, as reported by MyDramaList. Um Tae Goo has quietly assembled one of the strongest resumes in Korean film and television over the past decade, earning critical acclaim for Night in Paradise (2020), The Age of Shadows (2016), and Coin Locker Girl (2015). More recently, he drew praise for My Sweet Mobster (2024) and the supernatural thriller Light Shop (2024). A Konkuk University Film Department graduate, Um is the kind of actor who disappears into roles, which is exactly what a morally ambiguous character like Saengdak demands. "It's a project with a wide range of characters, and the script is fun," Um said. "I feel both nervous and excited, but I will do my best during filming."

Jo Hye Joo takes on Bok Hee, a key supplier in the drug trade and Paengi's first love whose unexpected choices send the narrative into unpredictable territory. The former YG KPlus model turned actress has built steady momentum through To My Haeri (2024), A Love So Beautiful (2020), and Search: WWW (2019), and is now managed by MAA Korea. "I was impressed by the historical setting and the unique circumstances and motivations of the characters," Jo shared at the script reading, per the official Disney+ press release. "It's such a compelling project that I wanted to join as soon as I read the script." Kim Dong Wook (Seoul Busters) will also make a special guest appearance as the boss of a rival gang, adding another layer of tension to what is already shaping up to be one of the most stacked ensemble casts in the 2027 K-drama calendar.

Hong Won Chan's Track Record Signals a Prestige Production

The director's chair is where this project graduates from interesting to essential viewing. Hong Won Chan built his reputation writing two of the most critically acclaimed Korean crime thrillers of the 21st century, The Chaser (2008) and The Yellow Sea (2010), both directed by Na Hong Jin. He then stepped behind the camera for Deliver Us from Evil (2020), a bruising action thriller starring Hwang Jung Min and Lee Jung Jae that earned $22 million domestically, according to the Korean Film Council. Born Guilty marks his first foray into series storytelling after working exclusively in film, a transition that mirrors the broader industry shift as Korea's top filmmakers increasingly move toward streaming platforms. Disney+ has been aggressive in recruiting Korean film talent for its original slate, and Hong Won Chan represents a significant get. His visceral, unflinching style is tailor made for a crime noir set in the grimy underbelly of 1980s Seoul.

The Webtoon Source Material and 1980s Setting

Born Guilty adapts the Kakao Webtoon of the same name by Lee Moo Ki (also credited as Imugi), a popular 2022 series that taps into the volatile period before the 1988 Seoul Olympics transformed the city. The 1980s redevelopment boom is a rich and underexplored setting for Korean drama. Entire neighborhoods were demolished, communities displaced, and the power vacuum created fertile ground for organized crime to flourish. The webtoon follows Paengi and Saengdak as they risk everything on a dangerous gamble in this lawless environment, and the drama adaptation preserves that gritty, morally gray foundation. Webtoon adaptations continue to dominate the 2026 K-drama pipeline, but Born Guilty stands apart from the romance and fantasy titles that typically get greenlit. This is a period crime thriller rooted in real historical upheaval, which gives it the dramatic weight that Disney+ needs if it wants to compete with Netflix's Korean crime slate.

The adaptation also positions Born Guilty within Disney+'s broader push into darker Korean content. The platform has steadily moved beyond family friendly fare with its Korean originals, from the espionage drama The Koreans starring Lee Byung Hun to the fantasy romance The Remarried Empress. Born Guilty pushes that envelope further into crime noir territory, signaling that Disney+ is willing to let Korean creators tell stories on their own terms rather than sanitizing them for a global audience.

What to Expect When Born Guilty Premieres

Production is currently underway with all principal cast confirmed and the script reading completed. Disney+ has not announced a specific premiere date, but multiple outlets including Soompi and MyDramaList report a 2027 release window, confirmed by Disney+'s official production announcement. Given the caliber of talent involved, including a film director making his series debut and a lead actor breaking from his established persona, Born Guilty is positioned as one of the most anticipated Korean dramas of 2027. We have been tracking Disney+'s Korean original investments closely, and this project checks every box: proven IP, a director with genre credibility, and a cast that balances commercial appeal with critical respect. If Hong Won Chan can translate his cinematic intensity to the episodic format, this could be the crime drama that puts Disney+ on equal footing with Netflix in the Korean thriller space.