Naruto begins to train with Kakashi. Kakashi finds it exhausting working with Naruto, who can’t understand anything explained to him. The only way Naruto can learn is through experience. In order for Naruto to develop his own special Rasengan, Kakashi introduces a special training method that would compress enormous amounts of time and effort into a short period. Moreover, Naruto must study the properties of his own chakra in order to develop a new jutsu.