Kanna, the Cutting Sword

Synopsis

Strategist Togame arrives on an island where she is supposed to find the head of the Yasuri family who was exiled there many years before and meets the current head of the family, Yasuri Shichika and his sister Nanami. Togame explains how she is on a journey to find the 12 most powerful swords in Japan that had been made by Shikizaki Kiki and needs his help. Seeing no reason to help her, Shichika refuses until Togame commands him to fall in love with her thus giving him a reason to help her. Suddenly attacked by a ninja from the Maniwa Ninja Corps with one of the 12 swords (Zettou Kanna), Shichika decides to help Togame and defeats the ninja. They then set out on their journey across Japan. (Source: Wikipedia)