I Will Love You Always

is episode 339 of the Naruto: Shippūden anime.

Summary
Back at the front lines, the five Kage struggle to hold their own against Madara's Susanoo-clad wood clones. Despite these great odds, Ōnoki rallies them to fight, noting that they need to fulfil a task at which cannot be failed. Madara realises that Ōnoki is the problem and that he must break his will. With that, the Kage go on the offensive against Madara's clones once more. The situation soon takes a turn for the worst as Madara in turn responded with his full power by activating his final Susanoo and proceeds to using its sword to attack them. Elsewhere at the cave, Itachi commands Kabuto to put an end to the Impure World Reincarnation, during which time Sasuke states his resolve to destroy the village that made his brother suffer for so long while bidding farewell to Itachi altogether. As the lights surrounding the reincarnated shinobi begin to illuminate the battlefield as they faded into pillars of light, Itachi approaches Sasuke and uses his Sharingan to show Sasuke everything about the Uchiha clan massacre. With the truth revealed to Sasuke at last, Itachi then imparts his final words to his brother, stating that no matter what happens or what he does from here on out, he will love him always.

Trivia

 * When Madara used his genjutsu to paralyse A, his Eternal Mangekyō Sharingan's design was mistakenly depicted without its central point.