A young investigator from ICPO (International Criminal Police Organisation), has come to Japan in pursuit of the ‘Dark Dragon Emperor’, the leader of an international criminal organisation plotting to invade the country. There, he meets Ryuji Tategawa, the ‘face of Kabukicho’, who enjoys the absolute trust of the ‘Dragon Emperor’—a mysterious fixer who has ruled the underworld for generations since the turbulent post-war period—but...