名探偵コナン: コナンとキッドとクリスタルマザー

"Detective Conan: Conan and Kid and Crystal Mother" is a 2004 OVA (Original Video Animation) belonging to the "Detective Conan" series. Directed by Masato Sato, it is the fourth OVA in the series. The story revolves around the Phantom Thief Kid's target—the "Crystal Mother," Europe's largest topaz, owned by Queen Selizabeth of the Principality of Ingram. Kid plans to steal the jewel during the Queen's train journey from Tokyo to Osaka, but the Queen has hidden it somewhere on the train, posing a challenge to Kid's plans. Meanwhile, Conan Edogawa happens to be a passenger on the same train and, sensing the presence of Kaitou Kid, starts his investigation independently. On the other hand, Inspector Ginzou Nakamori is also ready for a new confrontation with the elusive jewel thief. This OVA is a special entry in the "Detective Conan" series, blending elements of mystery, action, and suspense, and is another exciting showdown between Kaitou Kid and Conan.