Keiwa Sakurai's life is deeply intertwined with the Desire Grand Prix, a game created for amusement. His parents were victims of the Jyamato during a previous Grand Prix. Despite this, Keiwa participates, initially prioritizing civilian safety over combat. As he gains experience, he becomes a formidable opponent. Keiwa's goal is to use the Grand Prix to spread happiness worldwide, fulfilling a promise to his late mother, Mitsume.