The meito Tekketsu (鉄血, Blood and Iron) is a katana wielded by the first mate of the White Scarf Pirates, Aisa Himegami. A blade created specially for her during her time in the Cipher Pol, the blade was fed a so far unknown Devil Fruit that allows it to soaks up all the blood that falls on it and then convert that blood into iron to change its own shape or create more blades.