"Jōshi to Nisekoi Wedding" centers on the professional and personal dynamics between two characters: a young, hardworking office worker named Saki and her boss, a successful but aloof executive named Kōji. Saki, known for her dedication and efficiency, is unexpectedly thrust into a fake engagement with Kōji after a series of misunderstandings and workplace rumors. The arrangement is initially a strategic move to protect Kōji’s reputation and career, as well as to shield Saki from unwanted attention from a persistent suitor. Despite their starkly different personalities—Saki’s earnestness contrasts with Kōji’s reserved and pragmatic demeanor—the two must navigate the complexities of their fabricated relationship while maintaining their professional roles.

As the story progresses, the boundaries between their professional and personal lives blur. Saki begins to uncover Kōji’s vulnerabilities and the reasons behind his guarded nature, while Kōji, in turn, starts to appreciate Saki’s sincerity and determination. Their interactions evolve from strictly professional to increasingly personal, with moments of humor, tension, and emotional depth. The narrative explores themes of trust, identity, and the challenges of balancing personal feelings with societal expectations, particularly in a corporate environment.

Supporting characters, such as Saki’s colleagues and Kōji’s business associates, add layers to the story, often complicating or advancing the central relationship. Workplace politics, family pressures, and past relationships further influence the characters’ decisions and growth. The manga balances lighthearted, comedic moments with more serious, introspective scenes, creating a multifaceted portrayal of modern relationships and the complexities of love and ambition. The evolving dynamic between Saki and Kōji forms the core of the narrative, as their fake engagement gradually becomes a catalyst for genuine emotional connection.