A Shinobi of the Leaf

is episode 356 of the Naruto: Shippūden anime.

Summary
A tied up Kinoe is led out of the hideout by Kakashi. Then suddenly one of the glass silos break open and a giant snake comes out of it. Then this leads to a battle between Kakashi and the snake in which Kinoe gets swallowed. Kakashi manages to save Kinoe by killing the snake. Kinoe is shocked by Kakashi's act of saving him although he was targeted by Kinoe. The snakes carcass emits a poisonous fog weakening Kakashi. Kinoe manages to bring Kakashi to a safe spot and saves him by administering an antidote. Kinoe had the perfect chance to steal the sharingan but could not do it out of friendship. He exits the place with a decoy wooden eyeball which is later discovered by Danzo. Danzo is furious with Kinoe's change of heart and orders a curse marked to placed on him. Elsewhere Kakashi reported the incident to Hiruzen and Hiruzen sent out a summon for Danzo. Kakashi and Yugao were sent to despacth it. At the foundation Kakashi and Yugao are stopped by the foundation members claiming that Danzo is not there. Then Kakashi sent Yugao back to Hiruzen and Kakashi goes and saves Kinoe. On exiting the foundation Kakashi and Kinoe are cornered by the members and Danzo. Hiruzen comes just in time to save them and somehow convinces Danzo to let Kinoe join the Anbu that is under him