While driving home, Kogoro, Ran, and Conan witness a traffic collision between a green car and a red car. The man in the red car, Shun Hayami, dies from the collision due to his car catching fire. While the police interrogate Seiji Kurumatani, the man in the green car, he claims that he did not see the car at the intersection which caused the accident. Conan, suspecting a murder, mentions that they saw the two cars at a convenience store and the police question the store's owner to confirm this. The store owner tells them that he saw Hayami and Kurumatani arguing in front of his store. Conan confirms it is a murder and investigates the ashtray of the green car and finds the same cigarette brand as the one Hayami smoked. After tranquilizing Kogoro, Conan announces that Kurumatani planned the murder. He reveals Kurumatani, who is an auto mechanic, was repairing Hayami's red car and was lending Hayami his green car during the time. After the repairs were finished, he called Hayami to the convenience store so they could trade cars. Before arriving there, Kurumatani adjusted a billboard at the intersection where the collision would soon occur. The adjustment caused the billboard to reflect headlamp lights creating glare for Hayami which caused the accident. Kurumatani confesses to the murder and reveals that Hayami ran over his sister a year ago. When Hayami's car came into repairs, he knew Hayami was the murderer and began his plan for revenge.
Spoilers ahead for viewers who have watched the Detective Conan Season 34 finale. After 34 seasons and 1,297 episodes, it would be easy to assume that Gosho Aoyama’s legendary mystery anime has nothing left to prove. And yet the Season 34 finale, which aired on September 5, 2026, is another reminder of why Detective Conan remains one of Japan’s most enduring crime, suspense, comedy, adventure, and mystery series. The finale does not reinvent the formula; instead, it sharpens the pleasures that have kept fans following Conan Edogawa for decades: a clever case, emotional restraint, character history, and the constant sense that the truth is always one deduction away.
Season 34 opened with a telling choice: before he became Conan, Shinichi Kudo and Ran Mori’s trip to the aquarium was interrupted by murder. That first episode immediately brought the season back to the original wound of the series: Shinichi is still a teenager trapped in a child’s body after being poisoned by a sinister organization, and every case he solves as Conan carries the weight of a life he is unable to fully reclaim. The finale works because it understands that Detective Conan is not only about identifying culprits. It is about the tragedy of a brilliant detective forced to live beside the people he loves while hiding the most important truth of all.
What worked best in the Season 34 finale was its confidence. Detective Conan finales often have to satisfy two audiences at once: viewers who come for the weekly mystery structure and long-term fans invested in the bigger mythology surrounding the Black Organization, Ai Haibara, Shinichi’s condition, and Ran’s slow emotional reckoning. This finale balanced those expectations by treating the case as both a puzzle and a character test. The deductions mattered, but the silences mattered too. Conan’s small hesitations, Ran’s sensitivity, and the lingering presence of Shinichi in every decision gave the episode a bittersweet emotional charge.