At Agasa's house, Oomine reveals the gun he bought was supposedly filled with blanks and it was only used to scare Onda. After Onda was shot, he reveals he threw the gun away. Conan, Oomine, Ran, and Kogoro decide to search for the gun. Conan notices a dent on a wall and realizes where the gun landed. Conan reveals that the gun landed on an automatic window washer and was brought to the roof. After examining the gun, the bullets were confirmed to be blanks and that someone attempted to frame Oomine for the murder. Conan returns to the basement where the culprit attempted to shoot him and finds a part of a gun. While Kogoro is talking with the police and the three suspects, Oomine appears holding Conan and threatening to shoot him. The suspect Satoshi Kanda tackles Oomine down. Conan tranquilizes Kogoro and while impersonating him, reveals Kanda to be the murderer. Conan reveals Kanda planned the murder after hearing Oomine and the two suspects' plans. He directed Oomine to the gun site and was the one who sold Oomine the gun. As evidence, Conan reveals that Kanda was searching for Oomine's gun and due to the window washer, got detergent and dirt on his shoes. For more evidence, Conan reveals that while firing his gun at Oomine, his gun exploded cutting his finger. Conan gives the police the piece of the gun and reveals a bloodtest will confirm it is Kanda's blood.
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.