Metsuzan

Metsuzan(, Lit. "Catastrophe Blade") is the name of the special Anti Life-Fiber weapon developed for and wielded by Haruo Kajou, based on the design of Satsuki Kiryuin's Bakuzan, and crafted to compliment the fighting style, enormous skills, and behavior of Haruo which was gathered by Inumuta Rinko during her time observing Haruo fighting opponents with his Kendo Sword.