Re: [private]
How are they--oh. Right. Sorry about that, Itachi-san....
[He sounds a little sheepish; it's been a few years since this stuff has happened, for him; he'd nearly forgotten that it's in the future for both of the Uchiha brothers, at this point. But once again, he'll settle in to explain, patient and pleasantly informative--he's surprisingly good at providing exposition, really. And given what that brochure had said, if they were both replaced by doubles now anyway..... Well, what could it hurt to reveal the future to his partner and friend? Itachi deserved to know, and at this point, he seems to be years ahead of both of them, knowledge-wise.]
To make a long story short, Sasuke graduated from Academy and was placed on a team with a girl named Haruno Sakura, and a boy named Uzumaki Naruto--he's the Kyuubi jinchuuriki, your future target. Mine was the Yonbi. Hatake Kakashi was--is?--their Jounin sensei. Was, for Sasuke, I guess.
At any rate, Orochimaru was really not happy that he couldn't have you and your Sharingan all to himself, so he promised Sasuke that he'd help him gain enough power and strength to kill you, so long as he abandoned Konoha and became his apprentice, and gave him his body afterwards. It obviously hasn't happened yet for Sasuke, or he'd know who I am; we ran into him once before that, trying to capture Naruto. But Sasuke did end up agreeing to those terms and studying under Orochimaru for a couple years.
Ended up killing him too, I heard, instead of giving up his body. Funny how these things work out, isn't it?