Chief Jōgasaki commands the Special Investigations Unit of the Tokyo Metropolitan Police Department, directly supervising detectives Ken Kanzaki and Eriko Yoshizawa. His authority revolves around strategic coordination of high-stakes operations and meticulous management of unit personnel.

Eighteen years before the series’ timeline, he was embroiled in a clandestine robotic weapons smuggling case. While the exact nature of his role and the case’s conclusion remain shrouded, this shadowed chapter underscores his extensive tenure within law enforcement.

His exchanges with Ken and Eriko reflect a strictly professional rapport, devoid of personal entanglements or overt evolution. Tasked with administrative and tactical oversight, he anchors the narrative as a steadfast authority figure, ensuring operational cohesion without diverting into deeper personal arcs.

His documented presence remains exclusively confined to the main series.