Ahn Pan-seok spent the last decade of his career filming adults who take their time falling in love, and he finished his final series at the same pace. Between Steps, the slow-burn Korean melodrama now arriving on Disney+, pairs Kim So-hyun and Choo Young-woo as two graduate students who meet in a university robotics lab: he is a former swimmer who lost a leg to illness, she is a fashion student starting over in engineering. Ahn shot the series and edited it. He did not live to see it broadcast.

Ahn died at 65, less than two months before the premiere, after an illness. The production said shooting and editing were already complete, and when the cast and producers met the press in Seoul a few days before the launch, the event opened with a memorial video for him. Producer Kim Hyun-jeong of Studio Genie, which made the series with Studio Goti, called it a rare work that slowly follows the emotions of its two characters. One Korean outlet summed up the press conference with a headline about a drama going against a sensational era.

On paper the premise is spare, and Disney+ markets it that way. Its logline reads, in full: “Minjae lost a leg. Yujin lost her way. In a robotics lab, romance turns fiery, bittersweet, tender.” Park Min-jae, played by Choo, was a high-school swimmer until an illness took one of his legs; he is now a doctoral candidate who, in the platform’s synopsis, has built a quiet, controlled life and keeps romance at a distance. Lim Yu-jin, played by Kim, transferred out of clothing and textiles and enters the lab as a master’s student, the more outgoing of the two. Kim Min-seok plays her brother, Lim Yu-seong, Lee Chang-hoon plays Professor Ahn Jae-hong, and Lim Jin-hyo is a fellow researcher, Kim Se-jin.

The script is by Min Hyo-jung, whose name belongs to an earlier era of Korean television: Attic Cat, a comedy about a couple sharing a rooftop room, and Full House, one of the dramas that carried the first Korean Wave across Asia. According to the producer, Between Steps is the first time she and Ahn have worked together in 25 years. That pairing, a writer from the bright romantic comedies of the early 2000s with a director of the restrained adult melodramas that came after them, is the least discussed fact about the series.

Seen from Ahn’s filmography, the choice of setting matters more than it first appears. His romances were always workplace stories. Secret Love Affair set a 40-year-old arts foundation director against a 20-year-old piano prodigy. Something in the Rain followed a supervisor at a coffee franchise who falls for her best friend’s younger brother, a game developer. One Spring Night paired a librarian with a pharmacist raising his son alone. The Midnight Romance in Hagwon brought a star cram-school instructor together with a former student who returns as her colleague. In each, the job is the pressure system. The office, the family dinner and the colleagues who notice everything are where the love story gets negotiated, and Ahn let those conversations run longer than television usually allows. Something in the Rain and One Spring Night reached international audiences on Netflix and fixed his reputation abroad as the director of the slow Korean romance.

Between Steps keeps the workplace and changes the generation. The couple is younger, two graduate students rather than established professionals, and the workplace is a robotics lab, where the ladder of professor, doctoral candidate and master’s student is part of daily life. The premise suggests Ahn found in graduate school a version of the pressure he always filmed: two people who have each lost the future they planned and now work side by side on a new one. Whether the lab ends up as backdrop or as the engine of the story is something only the episodes can answer.

The casting points in the same direction. Kim So-hyun began acting as a child and has carried series such as Love Alarm and Good Boy; at the press conference she said Ahn took apart her habits as an actor until it felt like rebuilding from the ground up. Choo Young-woo, whose profile rose with The Trauma Code: Heroes on Call and Head over Heels, said that although the two were born the same year, Kim is far his senior on set and taught him a great deal on and off camera. Choo’s character wears a prosthetic leg. The logline names that loss in its first three words, so the series places disability inside the premise of its romantic lead instead of holding it back as a late reveal.

The route Between Steps takes to viewers is a familiar one. In Korea it airs in ENA’s Monday-Tuesday slot and on Genie TV, both part of the KT group, which also owns Studio Genie. Outside Korea, Disney+ carries it on the same Monday-Tuesday rhythm, and in the United States the Disney+ press schedule lists it on Disney+ and on Hulu under the Hulu Original label. A director’s last series reaches most of the world as a weekly line on a streaming release calendar, between franchise titles. That is how Korean drama travels now, and it is why the circumstances around this one deserve to be stated plainly before the first episode.

Which leaves the question the series cannot answer by itself. Between Steps is, on the evidence of its synopsis, a romance about two people relearning how to move forward. It reaches its audience after the man who made it has gone, finished down to the edit, and no episode will tell a viewer whether to watch it as a love story or as a farewell.

Between Steps premieres on Monday 5 October 2026 on ENA in South Korea at 10pm local time and on Disney+ in selected international markets. The series runs 12 episodes, with new ones every Monday and Tuesday through 10 November. In the United States it is also available on Hulu; availability varies by territory. Directed by Ahn Pan-seok and written by Min Hyo-jung, it stars Kim So-hyun, Choo Young-woo, Kim Min-seok, Lee Chang-hoon and Lim Jin-hyo.