Unohana's "zanpakutō" is . When in its sealed form it resembles a curved tachi. In its shikai, the entire sword transforms into a gigantic, flying, one-eyed creature resembling a manta ray. It has the ability to heal people by swallowing them and recuperates them in its stomach. When Unohana reseals Minazuki, it dissolves into green mist and reforms into the sheath of her "zanpakutō". Her "bankai" is . When activated it releases a red, oily substance from the blade. Its powers have yet to be revealed.