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Episode 1. Japan is the cradle of Ninjas, as you guys already know. Since ancient times, a mysterious and powerful Ninja clan has always secretly protected Japan from the shadows. They consider their mission as their own lives and dedicate themselves to maintaining peace for the country. However, the digital age has arrived. A terrorist attack of an unprecedented scale occurred, shaking the whole world. This made the Ninja clan realize their limitations, leading to a decision to operate at the b