"Greatful Magic" a widely popular card game in the world. In Japan is "Greatful Magic" youngest champion is Narashi Hiro. One day when he was challenged by the runner up, he met with Nikke who promised will tell him the location of his missing father....

In a world where traditional warfare has been replaced by proxy battles fought by extremely powerful, and extremely LARGE, individual representatives chosen from each country, one rookie warrior faces her introduction to the international stage.