Katatoya Duel Sword

This sword is summoned through Kamon's original sword. Kamon weaves 2 hand signs while his original sword is in his hand and drops the the sword. Then smoke appears and 2 black swords on a sword stand appear. The swords can be infused with chakra and are made from the hardest metals; they can cut through anything just about. These swords can be summon this thing (will create later).