The manga was authored by Masaki Segawa and published in Japan in 2003 and 2004, based on novel The Kouga Ninja Scrolls by Futaro Yamada published in 1958. The anime, produced in 2005 by GONZO Studios closely follows the manga aside from a handful of distinctions. The manga won the 2004 Kodansha Manga Award for general manga.[3]

The story takes place in the year 1614. Two ninja clans, Tsubagakure of the Iga and Manjidani of Kouga, battle each other to determine which grandson of Tokugawa Ieyasu will become the next shogun. The deadly competition between 10 elite ninja from each clan unleashes a centuries-old hatred that threatens to destroy all hope for peace between them.