This sword is another, yet only known artifact from the Raptor civilization of Zaterra alongside Reptile's ancient medal. Reptile's Kirehashi blade was given to him by the Vampire Nitara to use against a cyborg invader from Earthrealm. But before that could happen, Reptile suddenly went into a blind rage, swinging his Kirehashi sword around while Nitara defended herself until Reptile awoke from this strange delirium and came to his senses. He then chose to serve Nitara since his old master was supposedly eliminated by the Deadly Alliance.