Kamen Rider Zero-One: S1 E12 - The Great Detective Has Arrived Kamen Rider Zero-One

The police have started moving in their investigation of the attempted assassination of Shinya Owada. Together with A.I.M.S. the police search the Hiden Intelligence headquarters, but any evidence that Hiden created the assassin Humagear is nowhere to be found. When the police try to enter Hiden once more in order to catch the criminal Humagear, appearing before them is Was Nazotoku, a Humagear who introduces himself as “the self-proclaimed great detective!”