Korōshibyō (虎狼 死病, wild beasts fatal disease) is a Kekkei Genkai of the Mushinoiki family. It is a powerful Kekkei Genkai that "releases" a wild state in the user, and in the process awakening their animal instincts. Each member can enter a form known as Dire Form which basically blends their chakra into a form of their animal. Each member has a different animal, ranging from bears to wolves to even birds. By releasing the seal upon any member, they will "morph" into a form of their animal. It is said that their animal is chosen, upon their soul but if this is true is still unknown.