Watergate sends Kakashi to suffer. Episodes.

episode 339. According to the query of Youku.com, kakashi gaiden, the 339th episode of Naruto, on the first day in Hatake Kakashi, when he and his teacher Namikaze Minato performed the task of bridge without gods, Kakashi became a forbearance. For Kakashi, being forbearance is also his lofty pursuit of his father's white teeth. On the day when he became Shangren, his teacher Namikaze Minato gave him a gift marked Bitterness, and it was this Bitterness that saved Kakashi's life and Lin's life at the last moment. Namikaze Minato came back from the distant battlefield to save them.