Katanagatari

Katanagatari follows Shichika Yasuri, the seventh successor of the bladeless Kyotouryuu sword style, who has spent his life on an isolated island with his older sister Nanami. His secluded existence ends when Togame arrives and asks for his help collecting twelve legendary swords forged by Shikizaki Kiki. Shichika leaves his home of more than twenty years and travels with Togame, confronting the twelve people who possess and protect the weapons they seek.