Shigurui (シグルイ?, lit. “Death Frenzy”) is a manga series written by Norio Nanjo and illustrated by Takayuki Yamaguchi, based on the first chapter of the novel Suruga-jō Gozen Jiai by Norio Nanjō.
An animated television adaptation, based on the first 32 chapters (or the initial six and a half volumes) of the manga, aired on WOWOW July 19th, 2007 to October 12th, 2007. The series was directed by Hiroshi Hamasaki, written by Seishi Minakami, and produced by Madhouse Studios.
Plot:
"The story begins in 1629 Shizuoka during Tokugawa Tadanaga's rule. The daimyo staged a tournament where the participants fought with real steel Japanese swords rather than bokken ("wooden sword"), against his vassals' strong objection. The story revolves around the first match between the one-armed swordsman Fujiki Gennosuke and the blind samurai Irako Seigen and deals with the circumstances that led the two to participate in Tokugawa's tournament."
Source : Wiki