Seo Kang-jun and Ahn Eun-jin Lead KBS Romance Drama 'Another Love But You'

Seo Kang-jun (서강준) and Ahn Eun-jin (안은진) are confirmed to lead KBS's new Saturday-Sunday realistic romance drama Another Love But You (너 아닌 다른 사랑), with the broadcaster confirming the full lead cast on March 18, 2026, per KBS's official production announcement. The drama targets the Saturday-Sunday primetime slot on KBS 2TV, the network's most competitive broadcast window and the slot that typically draws its largest weekly audience. Amazon Prime Video will carry the drama globally, giving both actors a direct route to the international audience each has been building toward through a string of high-profile domestic performances over the last two years. Seo Kang-jun arrives here on the back of the 2025 MBC Drama Awards Daesang for Undercover High School. Ahn Eun-jin arrives as one of the most decorated working actresses in Korean television right now. This casting is deliberate.

What the Show Is About

The premise is deceptively simple and emotionally loaded. A couple enters their tenth year of dating and finds that the familiarity keeping them together is the same thing threatening to pull them apart. They have been through each other's worst moments. Loyalty and trust are not the question. The question is whether that is enough, and whether neither of them is quietly wondering what a different kind of love might feel like.

Seo Kang-jun plays Namgoong Ho, an assistant manager on the task force team at a confectionery company called Hoonmin. He is sociable and warm on the surface. Behind that warmth is a difficult childhood shaped by a mother who caused more problems than she solved. His girlfriend Lee Mi Do has been beside him through all of it, sometimes grieving harder than he did.

Ahn Eun-jin plays Lee Mi Do, a film director who announced herself as one to watch with a university graduation project that drew attention overseas. Since then, nothing has landed. Projects collapsed, confidence eroded, and she is now at a low point professionally. The drama picks up at exactly this moment for both of them.

The Casting Makes Sense

Both actors arrived here with momentum. Seo Kang-jun took the Daesang at the 2025 MBC Drama Awards for his work in Undercover High School, a comedy action drama that showcased a side of him audiences had not seen at this level. He has been working since 2013, built a following through Cheese in the Trap and Are You Human?, and the Daesang felt like the industry catching up to where his fans already were.

Ahn Eun-jin has been on a different kind of trajectory. She spent years in supporting roles across hospital dramas, variety-adjacent projects, and genre series before My Dearest (2023) broke her through completely, earning a Best Actress nomination at multiple end-of-year awards ceremonies and landing her on Gallup Korea's annual list of the year's top television actors for 2023, according to the polling organization's published survey results. She followed it with Dynamite Kiss (2025) and back-to-back appearances on Forbes Korea's Power Celebrity list, confirming that the momentum has not stalled. The supporting-role phase of her career is clearly a closed chapter. She is a leading actress with a documented track record of emotionally grounded performances across premium cable and public broadcasting contexts alike, and KBS is casting her as exactly the kind of lead she has proven herself capable of being.

The production team, in its official casting statement, described the two actors as having the ability to "sincerely convey their characters' emotions and naturally draw viewers into the story," adding that the drama's realistic tone made having them together "even more reassuring."

Supporting Cast and Production

The supporting cast adds further weight. Lee Joo Ahn and Jo Aram, both confirmed on March 18 per the same official casting announcement, round out the main lineup. Director Hwang Seung-ki is attached to helm the project. Writer Yoo Soo-ji handles the script.

When to Expect It

Another Love But You is targeting the second half of 2026 on KBS 2TV, with the global release coming through Amazon Prime Video. Production details and a premiere date have not been announced. We will update as casting and scheduling news develops.