Yoshioka Gonzaemon declares himself an assistant to Inspector Fabre. Hailing from Asia, he initially journeys to the World Festival's setting, encountering Fabre there and forming deep admiration for the detective. His profound devotion manifests in life-risking support for Fabre's investigations, cementing loyalty as his defining trait. Operating within Fabre's team, Gonzaemon aids in crime analysis and adversary confrontations. His background before joining Fabre extends no further than his Asian origin and festival attendance. Gonzaemon's narrative purpose revolves around unwavering investigative support for the protagonist, with motivations intrinsically anchored in his reverence for Fabre rather than separate ambitions.