Gutsy Master and Student: The Training

is episode 187 of the Naruto: Shippūden anime.

Synopsis
Naruto and Kakashi have left Konoha to begin their five year journey. As they run, they talk about Naruto's need to overcome Sakura's Sharingan which has the ability to force a ninja under juinjutsu. Jiraiya summons Gamakichi to place Naruto inside juinjutsu Kiss to practice breaking out of juinjutsu techniques. Naruto tries to disrupt his inner chakra flow, but instead, creates a wave of chakra around him thus hitting Gamakichi in the physical world. kakashi decides Naruto is ready to try and break out of juinjutsu techniques. Thus, they leave to juinjutsu Tree Village to train there, because it has natural juinjutsu affinity. Kakashi realises something is wrong in the once benevolent village as a villager he once knew acts hostile toward them and asks them to leave. Kakashi and Naruto find out that Kandachi has come there to hide from Shizune pursuit and has taken over as a violent dictator.

Trivia

 * Tsunade's face is already carved into the Hokage Monument, even though in the anime, it was carved during the timeskip.