Shinichi Kudo, a brilliant 16-year-old detective celebrated as the “Heisei Holmes” for cracking intricate cases beyond professional grasp, descends from a lineage of talent: Yusaku Kudo, a renowned mystery novelist, and Yukiko Kudo, a retired actress. His childhood immersion in crime analysis and literary puzzles forged his razor-sharp intellect. This trajectory shatters when the shadowy Black Organization poisons him with APTX 4869, an experimental drug that regresses his body to a six-year-old’s. Adopting the alias Conan Edogawa—a nod to authors Arthur Conan Doyle and Edogawa Rampo—he conceals his identity by residing with childhood friend Ran Mouri and her father, bumbling detective Kogoro Mouri.
As Conan, he covertly unravels mysteries, employing inventions like a voice-modulating bowtie to channel deductions through Kogoro, all while pursuing an antidote. His child form retains his athletic agility, linguistic fluency, and deductive brilliance, though his once-arrogant confidence matures into tempered resolve. Allies emerge: Ai Haibara, a fellow APTX 4869 survivor with scientific expertise, and Heiji Hattori, a rival-turned-ally detective from Osaka. Together, they navigate threats from the persistent Black Organization.
In *The Stranger From 10 Years Later*, a prototype antidote briefly restores Shinichi’s teenage form, plunging him into a hallucinatory future a decade ahead. Here, the Black Organization still looms, and Ran, believing Shinichi lost forever, contemplates marriage to Dr. Tomoaki Araide. Overwhelmed, Shinichi unveils his secret, begging her to delay her choice—a plea cut short as the vision dissolves into feverish delirium, echoing his dread of abandonment and the toll of his double life.
His journey intertwines evolving bonds, particularly with Ran, whose trust he yearns to reclaim despite the peril his truth poses. Once eager for acclaim, Shinichi now prioritizes protecting lives, vehemently opposing culprits’ self-destructive impulses. The relentless march of time—stolen by the drug, manipulated through antidotes, or warped in dreams—mirrors his struggle to reconcile duty as Conan with his desperate hope to resurrect Shinichi.