"Gurazeni" is a sports anime that delves into the professional baseball world, focusing on the financial and personal struggles of its players rather than the typical on-field action. The series centers on Bonda Natsunosuke, a relief pitcher for the Jingu Spiders, a fictional team in Japan's Central League. Bonda is a pragmatic and money-driven individual, often calculating his earnings and contract negotiations with a keen eye on his financial future. His perspective offers a unique lens into the business side of professional sports, contrasting with the more common narratives of passion and glory.

The narrative explores Bonda's interactions with teammates, management, and rival players, highlighting the pressures and realities of maintaining a career in professional baseball. Key characters include Bonda's teammate and friend, Gonda, who provides a more traditional view of baseball as a passion-driven endeavor, and various other players who represent different facets of the sport, from seasoned veterans to rookies navigating their first contracts. The series also touches on the impact of media, fan expectations, and the ever-present threat of injury or poor performance that can end a player's career.

Throughout the series, Bonda's journey is marked by his efforts to secure a better contract and improve his standing within the team. His pragmatic approach often puts him at odds with others who view baseball through a more idealistic lens. The story balances moments of humor and introspection, providing a grounded look at the lives of professional athletes. By focusing on the financial and personal stakes, "Gurazeni" offers a distinctive take on the sports genre, appealing to fans interested in the behind-the-scenes aspects of professional sports.