Lupin III vs Detective Conan (ルパン三世VS名探偵コナン) is a crossover work of Lupin III and Detective Conan (aka Case Closed):
Something is rotten in the Kingdom of Vespania. Queen Sakura and her son Prince Gill have died in a suspicious hunting accident. Such shocking tragedy become widespread on the news around the world. Of course, it even couldn't escape from the ears of Arsène Lupin III and Conan Edogawa either. The death of Queen Sakura and Prince Gill means that her first daughter, Princess Mira, is next to take the throne, but she refuses to do so since she hears the tragic news.
Meanwhile, during Princess Mira's visit in Sakura Saku Hotel in Japan, Conan Edogawa and Ran Mouri get involved in an intriguing incident. Conan Edogawa discovers that someone is after Princess Mira and tries to poison her. Also, when Princess Mira tries to escape from her bodyguard, she runs into Ran Mouri, who so coincidentally resembles her. Mira wants to be free for one day, and Ran wants to become a princess. Therefore, they exchange clothes in order to realize their respective desires. Also, Lupin plans to steal the Queen's Crown in Vespania, which gets the attention of Inspector Koichi Zenigata of Interpol.
Duke Keith of Vespania decides to conceal the news of missing Mira, and taken Ran Mouri back to Vespania as Mira's double. When Conan Edogawa hears about the news, he sneaks aboard Vespania's royal jet plane, and follows Ran Mouri, in order to find out the truth. He soon discovers that the death of Queen Sakura and Prince Gill has been no accident at all.
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.