Kongōdō

Kongōdō (金剛道, Vajrayāna) is a liquid-like ethereal spirit weapon that can cut anything but itself. It is one of several spirit weapons awakened by Keiku after he completed his susanoo for the first time. The liquid that the weapon is made of is stored within a gourd at his susanoo's side. It symbolizes indestructibility and irresistible force. When in use, it takes the form of a formless weapon, allowing it to be shaped according to the users will, though Keiku prefers it to be a double ended spear. When Keiku holds it, it resembles a thunderbolt with active, radiating lightning. Upon releasing it, it strikes the target at in a millisecond and can chain between all targets within a mile of it. It packs enough power to near instantly destroy the upper part of a mountain, or completely vaporize an individual. It is said to be a composite weapon made from the bones of a willing sage and was used by Indra.