"I will erase the past" - what a cryptic statement.
Does he mean he will kill off Obito for being the mastermind of wiping out the Uchiha clan?
Or will Sasuke be going after Madara and his unknown agenda?
Or does this mean that Sasuke has his own moon's eye/wacky jutsu plan to shift their whole reality?
Because, Sasuke may always be in favor of power and having things his way, but he's not Obito. He doesn't have some crazy power that can literally "erase" the past. So wth does he mean?
And even though he thought about the cracked picture frame of their team, I don't think erasing the past means killing Naruto...at least, not yet.
I think erasing the past has something to do with vengeance for the Uchihas. And I think Sasuke has just decided that he want the power, and the he will be the one to use it to correct the past and give everyone a better life. Which still disregards Naruto. I think the end battle between the two of them won't be for control of the any of the bijuus, but just a plain old power struggle. Naruto wants to be Hokage while Sasuke wants to be Hokage and de facto Ruler of the World. That's where they're ultimately going to clash. (just my 2 cents.)
And yeah...like everyone else said, I think this chapter opens the door for Sakura and Kakashi's storylines.
Oh and the end panel was heart-wrenching! Minato's probably looking at Naruto in Obito's grip and having a terrible flashback of the last night of his life, when Obito snatched Naruto up as a baby!