Neither do I. There will never be a concrete answer unless you enslaved the whole nation to do one. Oh well.
So, three more days. What to do?
As much as I want to see more Sakura in action and NS moments, I'll keep my expectation low as usual. For all we know, Kishi can do anything and make it anticlimactic NS. I'm not trying to be pessimistic, I just try not to think about it too much. If anything, 450, 631, 632, 662 & 663 have given me a lot of pleasant surprises ;) Nobody see it coming in that form isn't it?
Which makes me think that all those development for NS, all those NS moments included in the art works outside canon manga (e.g. Road to Ninja, video games, novel, etc) will be a totally waste of effort if NS isn't the end game. It'll make those development and art works a big joke. I won't be surprised if there will be SS/NH moments, because up till today, Kishi still concluded those moments with NS moments.
So, three more days. What to do? For me, Enjoy my life, sit back and patiently wait until the next NS moments are rolling out ;)
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"I'm sorry I didn't believe. But I'd given up believing in so much, until I met you. From the first day I saw you, you were everything I ever wanted to believe in. You can do this, Diana. I know you can...But I have to go."
"What? What are you saying?"
"It's okay, this is what I came here to do. I can save today, but you... you can save the world."