Ozaki works as a detective for the Tokyo district police, reporting directly to Deputy Chief Kyoko Ishihara. He possesses black hair and facial hair, typically seen wearing sunglasses and smoking. A significant professional relationship exists between Ozaki and Tokai, a yakuza member affiliated with Akira Hojo, suggesting prior operational familiarity between the detective and the organized crime figure. Despite this connection to Tokai, Ozaki remains committed to his duties within the police hierarchy.