Season: 6

As Sasuke has finally fulfilled his goal in killing Itachi and avenging his clan, he collapses from exhaustion. The news of his victory reaches the Leaf ninja and Tobi, who both race towards Sasuke's location. What does Tobi plan to do with him and who will reach Sasuke first?

Sasuke thinks that he's finally killed Itachi with the help of his most powerful technique, Kirin, but Itachi still has one final trick up his sleeve. Having used both Tsukiyomi and Amaterasu, Itachi calls upon the power of his third and final Mangekyo ability, Susano'o. Itachi has turned the tide of the battle against Sasuke, but the latter receives aid from an unexpected source. The battle between the Uchiha brothers is nearing its shocking conclusion!

After successfully breaking out of Itachi's Tsukiyomi, Sasuke gains the upper hand on his weakened brother. With no other alternative, Itachi activates his second Mangekyo ability, Amaterasu, a black flame said to burn forever.

Itachi reveals to Sasuke that Madara is the second culprit behind the Uchiha massacre, as well as the history of the Mangekyo Sharingan and the first two Uchiha to obtain it: Madara and his brother. One question still remains: Why did Itachi really spare Sasuke's life?