The Cancer Sacred Sword Kanikiri (巨蟹神刀・蟹切 Kyokai Shintō Kanikiri ) is one of the four Satanic Arms created by the Underworld Legion to be used as a weapon to corrupt the resurrected Shinto god of war Hachiman, who would then fight on the side of the evil demonic empires and wield the cursed sword.
Kanikiri's blade base is extremely sharp and slightly-curved, similar to a katana, with a silver-purple shaded color on the metal. It also has a black grip and a green knucklebow guard with violet curved protruded blades.
When Hachiman, who was killed millennia ago in the Ancient War, was resurrected through an Orb of Antares in 2034, he was restrained and forced to hold Kanikiri, which allowed the weapon's curse to warp the war god's mind into a rage driven to a path to destroy everything in its path.
Kanikiri's primary ability is its curse that can drive a god into animalistic and murderous rage, in this case Hachiman, which the sword was created specifically for.