This film is adapted from the masterpiece of the same name "Koga Ninja Scrolls" by Japanese writer Fuutarou Yamada. It was released in Japan in September 2005 with a total investment of 1.5 billion yen. In 1614, when Tokugawa Ieyasu dominated the world, the two long-hostile ninja villages, Iga and Koga, made an agreement to maintain peace, not to interact with each other but to fight regularly to decide the winner. The individual heirs of the two ninja villages, Oboro (played by Yukie Nakama) and Gennosuke (played by Joe Odagiri), met and knew each other by chance without knowing each other's identities, and then fell in love, but a tragic fate was waiting for them both. In order to truly grasp the power, Tokugawa launched a political conspiracy to provoke conflicts and confrontations between the two villages, and then eliminate the other's race. At this time, Oboro and Gennosuke will be forced to become enemies, and the two must shoulder the family mission to duel...