The year is 20XX. The ninja, who once shaped Japan's history, were dispersed across the nation during the Meiji Restoration. As these ninja integrated with other clans, their bloodlines diluted, and they gradually vanished from public view. Descendants of these ninja clans, aiming to preserve their heritage, established the WNA (World Ninja Association) in the hope of continuing their legacy. Consequently, the WNA succeeded in developing Ninja-Gum, an art capable of summoning the strength of the Shinobi. However, creating the most powerful Ninja-Gum requires the strongest ninja DNA. Thus, the Ninjala Tournament was held to identify the mightiest of all ninjas...