Along with the Humans and Mazoku, a third race known as the Mauve has evolved centuries after the events of Saga Brave. The Mauve, distinguished by their purple blood and tremendous intelligence, are ostracized by the other two races and regarded as a danger to global peace. After seeing discrimination firsthand, a young Mauve called Galette Revolt sets out to establish a means for all species to understand each other through the game Battle Spirits. Other factions from each race, on the other hand, want to keep the peace/reform the society in more unscrupulous methods...