Oshiri Tantei Movie 4: Shiriarty

Synopsis

In Oshiri Tantei Movie 4: Shiriarty, a string of puzzling crimes is revealed to be the doing of the villain Shiriarty, who is after a hidden treasure called the "O-PARTS". Butt Detective and his assistant Brown ask Audrey, an investigator from the international police organization Wanterpol, to help them keep the "O-PARTS" out of evil hands, all while Shiriarty works to cast the world into darkness.