Ama-no-Nuhoko

Using Koboreochiru, Nijūmaru will swirl countless of the metal fragments in a spiral shape that spins at a great enough speed that the friction it heats the metal, melting the shards together.Nijūmaru will then shoot out numerous spears made out of the melted shards from the spiraling shield of fragments to pierce his opponents, once thrown the spears still have chakra from Nijūmaru still can control them. Once done Nijūmaru can break the spears back into shards by running chakra through them very fast. The spears greatly resemble energy spears.