The setting is modern Japan... Here, a tournament is about to be held where the strongest from other worlds gather once every ten years to compete for supremacy. The grand prize for this tournament is the "Silver Whale Model," an artifact said to grant any wish. This unprecedented prize has drawn attention far beyond any previous year. Amidst this, Guest sees a flyer stating "Anyone Can Join" and applies out of pure curiosity. Now, the blood-soaked tournament... begins!