A long time ago, a meteorite landed in a certain country, and those with special powers began to appear there. These people were called “ninjas,” and they served feudal lords by gathering information and carrying out missions during a turbulent era.
However, as time passed, their role became obsolete. Chased across the ocean, the ninjas fled to every corner of the globe.
Present day — the descendents of those ninjas have founded the World Ninja Association (WNA) to preserve their special Shinobi Powers. The WNA has succeeded in researching and developing a “Ninja Gum” that is capable of strongly drawing out dormant Shinobi Powers. In order to discover the ninja with the strongest Shinobi Powers, an extreme tournament called “Ninjala” is held using the Ninja Gum. However, behind the scenes, unusual incidents, conspiracies, and unknown creatures are connected to the Ninja Gum...