The Mugenjin ( lit. Unlimited Blade ) is a sword belonging to Hoshin Seikijinshuu and is used while performing any of his Entoryu techniques. The sword is specially made to compensate for Hoshin's inability to use elemental manipulation. The blade of the Mugenjin is coated in oil and combustible materials, and with a bit of friction ( such as flicking a fingernail over it ) catches on fire, allowing it to burn and slash an opponent at the same time. Even without its burning capability, the Mugenjin is a deadly blade, possessing a serrated edge that tears more skin, and is sharp enough to slice through thick wood with little effort.