Okay. So, I'm doing a slight rewrite. I purposefully didn't announce it in case I got so busy I couldn't complete it. Basically, all I'm changing is the placement of this. I'm setting it like this:

They fight Kaguya.

The ones not trapped in the Infinite Tsukuyomi are collateral damage. (But they don't notice at first.)

After they kill Kaguya, they start their argument/discussion that leads to their final fight, during which they lose their arms. However, their attempt to release the tsukuyomi fails, and they realize that the others had died

The tailed beasts send them back

So, there you go. Hope this goes well! (I'm skipping all that info and going straight to when they're sent back; my fight scenes suck. Lol)

It was over. The war, Sasuke's vengence, everything. It was over. But everyone else was gone, too.

As the two shinobi gazed horror-struck at the battle field in front of them, both were relentlessly chewing themselves up inside.

What went so wrong?

Why did I let this happen?

I would rather have to live my life all over again and fix this than live so alone.

"Look up, young ones."

And, look up they did.

There, standing around them, were all the Tailed Beasts and their previous Jinchuurikis; Even Mito, and...

"Mom!"

The spiky blonde haired Jinchuuriki jumped up and ran into the arms of the mother he had only met once. At first, many thought he was laughing, and maybe he was, but it soon became clear he was sobbing his heart out. "Why me mom... *sob* ... why does everyone I care about have to leave? ... First you and dad died, and ojii-san, and Sasuke left the village, a-and Gaara almost died, and then Jiraya-sensei, and now everyone's gone... and Sasuke, too! Why does this always happen to us?! I don't understand mom... I don't..." He had worn himself out. Between training with Kurama and Killer Bee, then fighting Obito, and Madara, and Kaguya, then Sasuke, and losing his right arm to top it all off, he was physically and mentally drained.

Meanwhile, his mother's heart was breaking... Her sweet little boy, stolen from her arms shortly after his birth, had been through so much... too much, in fact. He should never have gone through everything he's been through. That's why, when she communicated her plan to the other Tailed beasts and Jinchuurikis (without letting Sasuke know) and they told her it was "against the rules," she enthusiastically demonstrated her wide range of colorful vocabulary for them all to hear.

After the tailed beasts 'held council,' they decided that she was right; Naruto had been through too much, but even besides that fact, the balance of life had been thrown off course. As it was, their world was doomed for destruction anyways. There was a reason that no one had ever attempted to use the Infinite Tsukuyomi; as much as it was possible, the moon simply isn't meant to be used like that. Even though no one else knew it yet, the moon would soon break into pieces and rain down upon the Earth's surface. (Naruto The Last; just go with it lol) The least they could do was save another world, and another Naruto, from this fate. (A/N: This may or may not be why the moon is gonna do that in the movie, but I'm giving it my best.)

So, they announced to Kushina that they had changed their minds.

After what seemed like hours later, Naruto woke up. It was then that both living shinobi were told the plan; they would be sent back in time to fix what went wrong.

After the initial shock had passed, they elaborated; Naruto and Sasuke would be sent back in time, but to another dimension, separate from their own. "But... wait, if it's a separate dimension from our own, will that still affect this one?" questioned Naruto.

Mito, who had mostly remained quiet thus far, said, "Sadly, that cannot be known. Such a technique has only been theorized in the past; the execution of it has been planned many times, but the world has simply sorted itself out. In this case however, there is no chance of the world "fixing itself;" too much damage has been done."

"As of this moment, with or without your intervention in the past, the moon will rain down in pieces and destroy what little life is left on this Earth. If, by some miracle, this plan works, and your intervention affects this dimension, then hopefully the moon will not bring about the end. If you do change another dimension for the better, but this world still meets its demise, then you may choose to stay in the dimension you've changed. A few more days should be enough, right, Ōtsutsuki-sama?"

Sure enough, the Sage of Six paths, Hagoromo Ōtsutsuki, had been listening and watching the entire time. Now, he agreed with Mito's unspoken question. "Yes, no more than a week." apparently Sasuke and Naruto weren't doing so well at concealing their confusion, because he clarified, "I can work a piece of my chakra into the jutsu to inform you when or if this world collapses or takes on the changes you've made to the other dimension. It will take a few days, because this is a very fragile jutsu; the slightest disruption could possibly cause innumerable problems, so it will take a few days to rewrite it enough to permit my chakra."

"As I'm already dead, it will simply be a matter of if I, as I am now, cease to exist; if this succeeds, and this world takes on the changes from the other dimension, you will be the only ones who remember this world as it was; the rest of us will exist as we would if this world never existed. Do you understand? Your memories will not change, but ours will."

They made their understanding clear, and with that, Hagoromo went off into some nebulous corner of the "area" they were in to begin work on integrating the changes he would be making.

Over the next few days, they talked, they cried, they even found the strength to laugh at times, and Kushina tried her damnedest to give Sasuke the love only a mother can; the love he had known and lost. If you counted all the tears in those few days, and separated the happy ones from the sad, most of the happy ones were from those three shinobi. Kushina had even indulged them with the story that she and Mikoto had bet that Sasuke and Naruto would be best friends.

But, finally, it was time to go.

"When you arrive in the past, you will still be in your current bodies, but if the adjustments we have made actually work, you should have your arms back." said Hagoromo.

"Also; finding the right dimension to send you to is difficult; getting too picky would just be inefficient. The closest dimension we could find was one in which you two have just passed your initial Genin authorization exams; never mind the survival test. Unfortunately, trying to find a similar enough dimension where Minato and Kushina have not yet been killed would be nearly impossible; the same goes for the Uchiha coup de tat and massacre."

"Possibly the last and most important thing you should know is that you will only be able to interact with your younger counterparts - with one exception. Under most circumstances, you will only be able to speak with and physically touch your younger selves. However, if, for some reason, your younger selves are at risk of death, you may be able to interact with those necessary to save them. If they are in combat, you can vanquish their enemy. If they have already been injured, you can retrieve a medical ninja for assistance. Understood?" he finished.

They confirmed their understanding, and then he added; "Oh, and I almost forgot - I'm too old to do this anymore - if your younger self dies after you make contact with them, the balance of nature and the jutsu will consider their death your fault, and will take your life as well; like the Death Reaper's seal." Although they looked a little nervous, they still nodded.

After one more tear-filled goodbye, they prepared the justu, and off they went.

Short Chapter, I know, But this is more of a sneak preview kind of thing. Rereading my work, I realized that I made both Sasukes too nice and forgiving too fast. So, since I'm truly horrible at fight scenes and personality transitions, I decided to set it after Naruto and Sasuke's final fight. Tell me which one you like better, and I'll work on that.