Sweet & Sour

Behind the Scenes of Sweet & Sour: The Netflix Rom-Com That Flipped the Script

Netflix’s Sweet & Sour (2021) arrived with all the trappings of a classic K-rom-com—bright trailers, a love triangle, and a meet-cute setup. But behind the saccharine title lies a production that leaned into playful chemistry, last-minute twists, and a cast that didn’t shy away from roasting each other. latestnetflix.com's read is that here’s what the evidence reveals about the making of this bittersweet Korean romance.

A Director’s Gamble on Tone

Lee Kae-byeok’s Sweet & Sour (original title: Saekomdalkom) walks a tightrope between rom-com tropes and a gut-punch finale, a balance that critics noted as either refreshing or jarring. The film’s 101-minute runtime suggests a deliberate pace, but reviews hint at a third-act pivot that “changes everything” . While the evidence doesn’t detail Lee’s creative process, the director’s choice to subvert expectations aligns with the movie’s title—sweetness masking sour surprises.

The film’s genre is officially listed as “romantic comedy” , but the ending has sparked enough debate to fuel multiple explainer videos . Whether this tonal shift was planned from the start or a late edit remains unconfirmed, but the buzz suggests Lee’s vision wasn’t as straightforward as the trailers implied.

Cast Chemistry: Roasts and Real-Life Bonds

The leads—Jang Ki-yong, Chae Soo-bin, and Krystal Jung—brought more than just acting chops to Sweet & Sour. Clips from behind-the-scenes or promotional events show the trio’s dynamic was anything but scripted. One video, titled “Jung Soojung and Chae Soo Bin roasting Jang Ki Yong for 1 min & 38 secs” , captures the two actresses playfully mocking Jang, with Krystal (credited as Jung Soojung) taking the lead. The banter hints at off-screen camaraderie, a rarity in K-dramas where leads often keep interactions professional.

Chae Soo-bin, known for her role in Love in the Moonlight, and Krystal Jung, a former f(x) member, were already established names, but Sweet & Sour marked their first collaboration. Jang Ki-yong, fresh off Now, We Are Breaking Up, was the relative newcomer, and the roast clip suggests he held his own—or at least provided ample material for jokes.

The supporting cast, including veterans like Lee Kyung-young and Kim Mi-kyeong, added depth to the film’s workplace setting, but the evidence doesn’t reveal whether their interactions were as lively off-screen.

Netflix’s Trailer Tease: What Got Left Out

The official Netflix trailers sell Sweet & Sour as a lighthearted rom-com, with Jang and Chae’s characters navigating love and career chaos. But the final product’s darker twist isn’t spoiled in the pre-release footage, leaving audiences to discover the film’s true colors on their own.

Reviewers later called out the “final minutes” as the movie’s defining moment , but the trailers focus on the meet-cute and workplace antics. This disconnect between marketing and reality isn’t uncommon, but it’s notable that Netflix leaned into the “sweet” angle, downplaying the “sour” until viewers pressed play.

The Ending That Divided Fans

No behind-the-scenes detail explains why Lee Kae-byeok chose such a polarizing finale, but the evidence confirms it’s the film’s most talked-about element. Multiple explainer videos dissect the ending , with theories ranging from narrative boldness to a rushed rewrite. One review calls it a “game-changer” , while the 5.6/10 rating on SensCritique suggests not everyone was on board.

Without access to full interviews or production notes, it’s unclear if the twist was always part of the script or a late addition. What is confirmed: the ending sparked enough debate to warrant dedicated analysis, proving that Sweet & Sour left a lasting impression—even if it wasn’t the one viewers expected.