TV-Series
Description
Kyōichi Koizumi is a senior executive at the Tōzai Shimbun, the newspaper where the protagonists Shirō Yamaoka and Yūko Kurita work. He initially holds the position of director of the editorial bureau and later becomes a managing director overseeing editorial affairs. At the time of his first appearance he is 53 years old. He grew up in a poor family as the eldest of four brothers, an upbringing that occasionally surfaces in sentimental moments. He is a graduate of Tōtō University, though some later stories change this affiliation.

Koizumi spent nearly twenty years stationed in Europe, primarily in France and other Western countries, before returning to Japan. This long overseas assignment gives him a pronounced Francophile streak; he maintains a wine cellar in the Ginza district and frequently displays a fondness for Western culture. He is an avid cat lover, owning a pedigreed Persian cat named Pasha and later a Himalayan named Nana, which he enters into competitions.

In the early part of the series, Koizumi is depicted as a stern and even intimidating figure. He openly opposes the Ultimate Menu project and is one of the few people within the company who dares to stand up to the publisher, Daizō Ōhara. His assertiveness leads Ōhara to remark that Koizumi is the only person who can defy him and still be promoted. Over the course of the long-running story, however, his character becomes less principled and more sycophantic toward Ōhara, losing much of his earlier backbone. He develops a reputation for petty tyranny, often shouting at subordinates and engaging in what would now be recognized as power harassment. For example, he loses his temper at staff members who merely express concern about his health, and he repeatedly berates them for being lax.

Despite these negative traits, Koizumi is not entirely unsympathetic. He has moments of genuine sentiment, such as when he remembers his impoverished childhood and his mother. He also develops a hobby of fishing, joining an industry fishing club later in the series. His motivations are primarily careerist, but he never plays a direct role in the culinary rivalries that form the core of the story. Instead, he serves as a senior figure in the newspaper’s hierarchy, overseeing the department where Yamaoka and Kurita work. His key relationships within the company include his interactions with Cultural Affairs Director Hideo Tanimura (his subordinate), Deputy Director Tomio Tomii, and the publisher Ōhara, toward whom his attitude shifts from defiance to obsequiousness. He has little direct interaction with Yamaoka’s father, Yūzan Kaibara, or the culinary world at large. Koizumi’s development across the series is marked by a decline in his independent judgement and an increase in his comedic and abrasive behavior, making him a more peripheral and often buffoonish figure in later arcs. His notable abilities lie in his management and editorial oversight, bolstered by his international experience, but he possesses no special culinary expertise.