Kimio Narita is the desk editor at the weekly magazine JIDAI and serves as the direct superior to the protagonist, Hiroko Matsukata. At 39 years old, he is a seasoned professional who occupies a middle ground in the editorial department's hierarchy, positioned between the younger, more passionate staff and the often-detached chief editor.

Narita is characterized by his calm, pragmatic, and shrewd approach to his work. He embodies a work-smart, not-hard philosophy that stands in stark contrast to the all-consuming dedication of his subordinate, Hiroko. While he is typically portrayed as an amiable and encouraging figure who is supportive of his colleagues, he is not afraid to become stern and raise his voice when necessary to ensure that deadlines are met and that the staff produces their best work. His easygoing and efficient demeanor makes him an effective manager who skillfully navigates the pressures of the newsroom, often achieving results while avoiding unnecessary trouble.

Narita's primary role in the story is as a mentor and foil to Hiroko. He represents a different philosophy of work-life balance, valuing his personal time and hobbies without letting his career consume his entire identity. The narrative uses his perspective to subtly suggest that there is no single correct way to approach a career, only the path that aligns with an individual's own values and limitations. This contrasts directly with Hiroko’s intense, perfectionist drive, offering a counterpoint to her belief that one must sacrifice everything for the job.

One notable aspect of his personal background is that it is mentioned Narita does not like women, and his romantic preferences or personal life outside the office remain ambiguous. He is single and is known to enjoy outdoor hobbies, which aligns with his overall character as someone who has cultivated a fulfilling life beyond the walls of the magazine. His key relationships are primarily professional, especially his dynamic with Hiroko, where he balances the roles of a demanding boss and an encouraging friend. His efficient and results-oriented method of leadership also occasionally puts him at odds with the more passive chief editor, Tatsuhiko Umemiya. Throughout the series, Narita remains a steady and competent presence, representing the pragmatic reality of a long-term career in journalism without undergoing a dramatic personal transformation. His notable ability is his managerial skill: he knows precisely when to apply pressure and when to offer support to extract the best performance from his team while maintaining his own equilibrium.