I am personally convinced that no pairings will happen in the end (I think chances are very high that Sasuke and Naruto will both die as Naruto hinted), if one 'pairing' were to happen I would actually put my money on NaruHina, here is why:
I used to think "no pairings" was the mostly likely result, but he has thrown fuel on the romantic subplot too many times to have the whole thing either remain unresolved or flame out and everyone end up just friends.
I also think the odds of Naruto and Sasuke dying are low. First, is the, so far, unbroken trend of Kishimoto not killing anyone of consequence in the rookie nine-generation. I don't see a sudden deviation now when he couldn't off less imporatant characters whose relevance has long since passed (Neji, for example)
Jiriaya and Tsuande could not save their friend. They failed. Naruto, if Kishimoto keeps with the themes he has been using, will not. This also ties in with the fact that, at it's core, this is still Naruto's story. So then, what does "saving" Sasuke entail?
I believe that Naruto would see a dead Sasuke as a failure no matter what Sasuke said as he died, especially if Naruto is the one dealing the killing blow. If the final confrontation is Naruto v. Sasuke and Sasuke only comes to his "senses" about the cycle of hate while he lay dying from a fatal blow delivered by Naruto....then he's still a victim to that cycle and is not, in my mind, "saved" in any meaningful sense of the word. He still died because of his own hate, only getting over it after his life is essentially over. I have a tough time believing Naruto would this result a success.
Naruto already knows about it and has already determined to end it...so what would be point in doing that? I can only see two (1) to have Naruto learn you can't save everybody and you can't save those that do no wish to save themselves ; (2) this would be the trigger event to convince Naruto of the need to break the cycle on broad scale and not just with his friend.
He has already done (2), so that leaves (1) and I don't see that happening given the manga's more positive overall themes and Kishimoto's preference for happy endings. That and Naruto doesn't seem to be the type of ever accept (1) as a possibility.
The only way I see Sasuke dying now is through self-sacrifice (someone besides Naruto lands the blow). Naruto saves him, but Sasuke dies protecting Naruto as the actual act of redemption; the proof that Sasuke's transformation is more than just words. I suppose the two acts could be simultaneous, but I'm not expecting that.
If Naruto v. Sasuke is the final battle, I don't see where this could come in. I still don't Kishimoto killing him(see Neji, Hinata, Gaara and so on), but at least if he did then he is saved by Naruto from the hate and only dies because of a selfless act friendship that he himself chose. That's about the only way I see Kishimoto squaring Sasuke being saved and Sasuke still dying.
Finally...it would seem odd to me that the character that has been the most involved in the romantic subplot (Sakura) would come out of the whole thing without a pairing while others do.
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Since the kage summit arc Kishimoto is done with raising more questions. He is rounding things up, so time to give the readers the answers.
NaruSaku - a pairing I see as a red herring - is finished off in this arc (IMO), with the simple fact that, Kishimoto has shown us:
- Naruto's reaction to the confession was also very interesting. He notes that it is a lie and that she loves Sasuke, a weird thing to come from someone who is still pursuing her seriously
Soupy deals with other points I deleted from the quote...so I'll only address this. I hate the red herring argument as much as the brother/sister one. As Soupy said, you can't prove it and it reeks so much of an argument of convenience that you can now cram everything they do into a tidy box and whatever future development is now rendered irrelevant because you have a convenient out everytime anything happens.
Not to you are doing this, but explanation of why I think it's kind of a crappy argument.
As Soupy says, Naruto has long since believed she loves Sasuke and only him. This is repeatedly shown throughout part one, yet he still continues to kling to those feelings. They have not deviated at any point. As long as he holds this belief, regardless of it's validity, his reaction is not weird at all.
Moreover, given the conditions it was made under, Naruto accepting them would have complicated matters significantly and not resolved anything because, ultimately, Sakura has not resolved everything within herself. What if Naruto accepts but doesn't follow the desired course of action (to go home)? What if he does and her plan suceeds in full? This would be merely the beginning over another set of problems and not a conclusive resolution.
The confession tells us very little we didn't already know about Naruto: He still holds on to the belief that she is love with Sasuke and him alone and that he is not so desperate to be with her that he is unwilling to accept a confession he does not believe to be genuine and in the process essentially forgo one of his basics goals of part 2.
So...I see nothing weird about his reaction.
EDIT: And as far resolving Naruto's feelings..,I think the most damning thing for NaruHina at this point is that there is nothing on the "Naruto" end that needs to be resolved. A seen similar to the hug (where Hinata sees as spectator) would be sufficient. All that would be necessary right now is for Hinata to accept it herself (assuming it occurs).