Hailing from Izumo in Shimane Prefecture, Makoto Hanzawa—universally called Hanzawa-san—journeys to Beika City, drawn by its notorious status as the world's highest crime rate city. He sees this environment as perfect for his singular, vengeful purpose: murdering Shinichi Kudo. This deadly intent springs from a deep-seated grudge; Hanzawa firmly believes Shinichi falsely accused him of a crime, though the specifics of that past event remain shrouded. His mother, Hitoe Hanzawa, and other relatives exist in his background, their direct impact unelaborated. Visually, Hanzawa mirrors the classic black-silhouetted design used for unidentified culprits in the *Detective Conan* series. This featureless form, lacking discernible facial details or clothing specifics, embodies the archetypal mystery criminal. Internally, Hanzawa embraces a self-image of inherent evil. Minor annoyances—Sonoko Suzuki's laughter, a rude landlord—trigger vivid fantasies of murder, oscillating between darkly comedic and brutally violent. Yet, he consistently suppresses these urges. Pragmatism overrides impulse; he recognizes "unnecessary" killings would draw police scrutiny and jeopardize his primary target. Beneath the vengeful exterior lies pronounced cowardice. Real violence or locations tied to actual crimes induce cowering terror, like discovering his rented apartment hosted multiple murders or avoiding rooms containing stigmatized items from past cases. His cautious, calculative nature governs every action. He meticulously weighs risks and consequences before contemplating crime, often abandoning plans entirely. This stinginess extends to finances, dictating purchases and expenditures. He possesses an unexplained sense for detecting a "criminal aura" in others, initially drawing him to a fellow tenant, Hanbayashi. However, this brief connection shattered when Hanbayashi attempted murder alone, highlighting Hanzawa's isolation. Interactions with Beika's residents fuel his paranoia. Witnessing Ran Mouri effortlessly defeat armed assailants branded her the "crazy strong high-school unicorn girl" in his fearful mind. Professor Agasa became a "mad scientist" after a three-week sedation from an overpowered tranquilizer. Conan Edogawa shadows him suspiciously, unnoticed due to Hanzawa's scheming preoccupation. A mistaken identification briefly entangled him with Kaito Kuroba (Kaito Kid), whom he confused for Shinichi Kudo before discerning the difference. These encounters reinforce his tendency to misinterpret others as menacing, feeding his self-victimization. His development stalls. Sporadic progress—narrowing targets, devising plans—yields no results, mired in comedic ineptitude. Daily life involves navigating Beika's absurd crime rate, job hunting, enduring desolate nights and stigmatized properties, while mundane obstacles or his own hesitations perpetually defer his murderous ambition.