Tensatsu

Tensatsu(, Lit. "Heavenly Murder") is the name of The Sword wielded by The Legendary Mazoku Ninja, Murasaki. It is a weapon that, because of his power, has been sought by many throughout the course of history so as to take advantage of the strength and abilities that it bestows upon the user. However, Tensatsu remains guarded in secrecy, held within and underground sealing room beneath The Murasaki Ninja School.