Asuma supervises Naruto and Sora's wind chakra training, and notices that Sora, like Naruto, has very powerful chakra. Tsunade and Yamato learn from Chiriku that Sora was inadvertently responsible for an incident in which the Temple of Fire was destroyed. Later, Asuma gives Sora a claw made from the same materials as his chakra blades. It is revealed that Asuma killed Sora's father Kazuma,