Name: Raikaze Kunai (lightning wind kunai)
Appearance:
It is crystalized bone with lighning chakra running all over the outside, and consealed inside is wind chakra.
Special Abilities: The Raikaze kunai generates lightning from its outer crystalized shell and has wind contained inside the hollowed inside, which splinters on contact.
Origin: Kumori made the Kunai by forming a hollowed out bone kunai that he injected with wind chakra. He then crystalized it by shocking it repeatedly for long periods of time. Kumori made it because he saw a waste in carrying multiple kunai into battle when he could carry a special kunai.