Yamato is brought in to oversee the training because the high-intensity practice risks leaking the Nine-Tails' chakra. Yamato explains that his is a rare combination of Earth and Water natures, a feat normally only possible for those with a Kekkei Genkai .
In , titled "Wind" ( Kazecap K a z e
Naruto uses special chakra-sensitive litmus paper to discover his own affinity. When the paper rips in half, it confirms his natural element is , which Kakashi notes has the highest offensive potential. The Shadow Clone Training Method Naruto Shippuden Episode 55
: Kakashi reveals Naruto naturally has four times more chakra than him; if the Nine-Tails' chakra were fully accessible, it would be 100 times more. The Role of Yamato and Asuma Yamato is brought in to oversee the training