I feel the opposite.
Naruto's nonchalant response upped the coolness factor of that closing scene by a degree of 1000000000%
But it just doesn't make any sense. Naruto would have no idea that his dad would have any possible way of being revived. Let alone be there. And his reaction time would not be that fast. Taking this into account, Naruto had to have known beforehand that Minato was alive again. How could he have known that? Is he a sensor now? Was he able to detect the kage being revived from a really long distance away while he was busy
powering the entire alliance?
Well maybe he recognized him because of the kunai? Kushina told him a lot about Minato so that's from where Naruto probably got that.
Also Sakura definitely will have a reaction to that, didn't toy see the "!" when Minato arrived and Naruto said Dad?
The kunai really doesn't matter. The fact that Minato's there at all in the first place should have taken him by complete surprise, whether he saw the kunai or not. It's like if you saw a dead relative just walk into your house. It shouldn't be possible. Minato was not supposed to be able to be salvaged, even in a world plagued with edo tensei. He was gone. For good.
If you (figuratively) saw a dead relative walk into your house, chances are they wouldn't look at them, instantly smile, and offer them a refreshment with no sense of surprise or shock. More like "how the hell are you here, what happened, how is this possible?".
Now, yes, there are probably people out there that would react more naturally to a dead relative walking into their house. Likely someone apathetic, someone separated, or someone with a lack of concern that just accepts things as they are, someone that doesn't question things, that lets whatever happen happen. Needless to say, Naruto is
not that type of person.
Edited by zacrathedemon5, 15 May 2013 - 08:28 AM.