Kendo is a colleague at the bookstore where the main character works, recently transferred from the distribution department to the comics section. His face remains perpetually concealed by a kendo mask, consistent with the series' visual style where employees feature obscured faces or unique head coverings.

Despite his slim build, Kendo possesses notable physical strength, effortlessly lifting and carrying heavy loads of books without visible strain—a capability honed in his previous distribution role. He maintains a soft-spoken and humble demeanor, standing out among more eccentric coworkers. His quiet willingness to assist, particularly evident during chaotic inventory involving damaged books, quickly earned him appreciation.

His key narrative moment occurs during his introduction, where the staff reacts with fascination to his arrival. This coincides with an inventory crisis; Kendo helps locate vital replacement stock, proving invaluable with his calm assistance and reinforcing his cooperative nature. Beyond this episode, he receives no further development. Kendo embodies themes of workplace dynamics and operational challenges like inventory management and staff adaptability within the bookstore setting.