Unyielding Fury

The Unyielding Fury kata teaches the bushi to tap into the boundless rage of the Crab Clan, the rage that fires their boundless sense of duty. The Crab can never be defeated, and anyone attempting to slay a true Crab will find themselves being dragged into the next world also. This kata is seldom seen in action, and its existance merely a matter of whispered legend. (Samurai p. 21-22)