So this whole chapter is pretty much just the ending of Naruto and Sasuke's fight scene in the Valley of the End. If you already know what happened you can pretty much just skip to the next chapter, because that's where the timey wimey wibbly wobbly stuff happens.
Valley of the End (after defeating Kaguya)
After hours of fighting, the Valley of the End lay in pieces, and the two's chakra was almost entirely spent. Not able to mold the remaining chakra into a jutsu, they resorted to simple taijutsu, their movement so slow a rookie genin would have ample time to dodge or parry.
"Hang in there! It's not much, but I've finished infusing some chakra -!"
Naruto looked down to see Sasuke's fist coated in the Kyuubi's red chakra.
"This is one of the abilities of the rinnegan." Sasuke informed Naruto.
Using his rinnegan, Sasuke absorbed the last of the Kyuubi's chakra, leaving Naruto on his knees. Charging his Chidori using the Kyuubi's chakra, he thought, 'Now… now I can finally be alone.'
"Farewell...my one and only...friend!" And with that, Sasuke charged at the slumped Naruto.
But at the last second Naruto moved himself to the side, and to the inside of Sasuke's guard, landing an uppercut on him, which sent him flying into a cliff.
"Over and… over and… over and over again! Just give up, and let me cut you down!" Sasuke's voice raising with each word spoken.
"Can't do that. 'Cuz I'm your one and only friend!" Naruto replied with a determined smile on his face.
Sasuke charged his Chidori, and Naruto stood looking up at his old comrade, waiting until the last moment in order for his jutsu to not be absorbed by the rinnegan.
One singular leaf drifted side to side, slowly falling into the broken valley. As soon as it hit the water, both shinobi tensed and jumped at each other.
The Chidori collided with the Rasengan and an explosion of light and energy moved outwards, decimating what remained of the Valley of the End.
Naruto awoke first, catching sight of the moon and the night sky above him. Looking to his side, Sasuke was still unconscious, and missing an arm. He then looked down at his own arm and noticed it was missing as well. For some reason though, he didn't feel any particular emotion because of that.
An hour later, Sasuke became conscious.
"You've finally come to, eh? As you can see if either of us moves too much, we'll bleed out and die."
"Why would you go that far? Why do all that just to get in my way? I gained the power to enter the darkness, and sever all bonds, and naturally, everyone's tried to cut their ties to me as well, at some point. But you... You've never attempted to cut me off.
The only one who can handle all that hatred is me! Why do you keep involving yourself with me?"
"You already know, don't you? Now that your body can't move, your mouth sure is moving a lot."
"Just answer me!"
"'Cuz you're my friend. I was jealous because you were good at everything. So I made you my rival. You've been my goal. I had nothing, and I found a bond. I wanted to be strong and cool like you. That's why I kept chasing after you."
"It was the opposite. In reality, I was the one who was jealous of you. Because you had a strength that I didn't. You were always walking in front of me. Just like my late Big Brother."
"Where are we? Don't tell me this is really Heaven this time?"
"Looks like we fell asleep and slept until morning."
"We've failed to die again."
"Damn it! I still can't move! I was hoping to punch you hard and make you finally open your eyes!"
Sasuke laughed.
"W-What is it?"
"We're messed up like this, and you still wanna fight?"
"Damn right! No matter how many times it takes!"
Sasuked hmph'ed "I admit it."
"I've lost."
"You idiot! This fight isn't about winning or losing! It's about punching a sulking friend, to make him snap out of it! That's what it's about! The real match that I want, comes after that!"
"If I die here, the long cycle of destiny the Sage of Six Paths mentioned will probably end as well. This is a kind of revolution too. You can release the Infinite Tsukuyomi after I'm dead, by transplanting my left eye into Kakashi or someone else. I'll put an end to myself."
"By dying? Don't think dying will settle this! If you're willing to die, then live and help me instead. What I want to do is to make all shinobi cooperate with each that definitely includes you! Just because you want that doesn't mean others will agree to it. Damn it! If you keep whining and sulking, I'll slug you again!"
"There's no guarantee I won't stand against you again."
"Then I'll stop you again! Besides, I know you're not going to do that kinda thing anymore."
"How can you be so sure?"
"Don't make me repeat myself! Haven't you figured it out yet?! Now that I think about it, you were always pretty stupid too."
"Shut up, you loser."
'I'll start knowing your pain and feelings too, Naruto.
You never cut me off.
You kept trying to get closer to my feelings.
You never stopping calling me your friend.
Even though I tried to sever those feelings myself.'
With that, they both fell asleep.
A/ N
So after Naruto and Sasuke talk, and they both fall unconscious, they are sent back in time. Basically I sent them back after the talk so that when they get there, Sasuke won't be bent on assassinatingthe Five Kage's. Cuz that'd be bad.
R&R!