Meitantei Conan OVA 01: Conan vs. Kid vs. Yaiba - Houtou Soudatsu Daikessen!!

Mitsuhiko lends Conan an enormous stack of Yaiba manga, and Conan reluctantly begins reading. Soon afterward, Kogoro Mouri is hired by the Mine family to guard a treasured sword after Kaitou Kid announces that he intends to steal it. At the dojo, Conan meets none other than Yaiba Kurogane himself.

Conan and Yaiba join forces to protect the blade and expose Kid's scheme, but the case grows stranger with every turn. Familiar faces behave in impossible ways, the boundaries of Conan's world begin to bend, and even the great detective has reason to wonder whether this bizarre crossover can possibly be real.