Sweet & Sour

Sweet & Sour centers on the delicate, evolving relationship between Jung Da-eun (Chae Soo-bin), an empathetic and overworked nurse at a hospital in Incheon, and Jang-hyuk, a devoted boyfriend whose gentle affection serves as her sanctuary. Their initial romance is filled with tenderness, warmth, and quiet moments stolen between grueling work shifts, presenting an idealized vision of young, supportive love.

The couple's dynamic begins to fracture when Jang-hyuk (Jang Ki-yong) secures a prestigious temporary dispatch position at a major architecture and engineering corporation located in Seoul. Eager to convert his temporary contract into a permanent position, he commits to punishing work hours and an arduous daily commute. The resulting physical distance and relentless exhaustion slowly dismantle the warmth between the couple, breeding unspoken resentment and miscommunication.

As Da-eun struggles with unpredictable hospital rotations and her own professional burnout, Jang-hyuk finds himself spending late nights alongside Han Bo-yeong (Krystal Jung), an ambitious fellow contract worker navigating the same cutthroat corporate rivalry. As workplace camaraderie blurs into emotional temptation, the film charts the gradual decay of intimacy under the weight of contemporary ambition and fatigue.

At its core, Sweet & Sour serves as an unvarnished deconstruction of romantic idealism within an unforgiving, hyper-competitive society. Director Lee Kae-byeok illustrates that modern love rarely fails due to active malice or villainy; rather, it is worn down by the grinding reality of socioeconomic insecurity, relentless commuting, and professional burnout. The film critiques the illusion that personal relationships can thrive on autopilot while individuals pour all their vitality into corporate survival, arguing that love requires deliberate presence, attentiveness, and emotional labor.

Viewers and critics have debated whether the film represents an indictment of Jang-hyuk's individual moral failings or a systemic tragedy where no single individual is truly culpable. One perspective views Jang-hyuk as the ultimate symbol of toxic male complacency, prioritizing his convenience while abandoning Da-eun during critical life crises such as her pregnancy. An alternative interpretation reads Da-eun's actions not as passive victimization, but as calculated emotional self-preservation, demonstrating that she had already emotionally moved on and secured a parallel romance when she recognized Jang-hyuk's duplicity.

Released internationally on Netflix in June 2021, Sweet & Sour quickly climbed into Top 10 film rankings across numerous Asian markets, notably South Korea and Hong Kong. The film resonated strongly with young millennials and Gen Z viewers due to its sharp depiction of South Korea's notorious gwaro (overwork culture) and the plight of bijeong-gyujik (non-regular/contract workers) striving for permanent status. By refusing to deliver a conventional sugary K-drama resolution, the film sparked extensive online discussions regarding long-distance relationships, emotional neglect, and workplace burnout.

Audience reception to Sweet & Sour was polarized yet lively. Critics and viewers widely praised the cast's natural chemistry—particularly Chae Soo-bin's nuanced emotional range and Krystal Jung's grounded, charming screen presence—as well as the sharpness of the climactic twist. However, the film faced criticism during its middle act, where some found the workplace melodrama repetitive and the characters increasingly unsympathetic. Despite these pacing critiques, the clever narrative resolution was universally recognized as an effective and memorable subversion of typical rom-com tropes.