Disclaimer: I do not own Naruto, Naruto: Shippuden or Boruto: Naruto next generations they are all property of Masashi Kishimoto, I am just using his worlds, characters and lore.
When the situation is dire again and Naruto has no choice but to take extreme decisions, a brother sacrifice will guide him to the path of salvation.
Time travel, Overpowered but cautious Naruto, Normal Pairings as in cannon (no multi or yaoi). I hope I manage to continue this story and update regularly.
Chapter 1: Prologue.
Naruto was having a sense of déjà vu. To put it in simple words, history was repeating itself. Twice. The world is at war yet again with his village currently being destroyed and losing his best friend and brother in all but blood. His son is fighting the enemy on the front lines and he is trying to help as much as he can. You might be asking yourself how can he the hero of the shinobi nations can do only that and not save the world. Well the answer is simple. New enemy, new powers and while he is still the overpowered sage he lacks the dimension powers other combatants have.
Now he was running, with the lifeless body of Sasuke on his back, he was running to the safe spot where Sakura and Hinata were protecting the weaker shinobi and planning for . He was not looking forward to explain Sakura and Sarada why Sasuke died.
#Safety Barrier#
Swiftly reaching the hidden barrier his hearth almost stopped at Sakura's heartbroken reaction, Sarada too wanted to cry and scream but she knew that it was not the time to mourn yet.
-Why, what happened…? Asked Sakura crying and more pale than Hyuuga's.
-Sasuke…Sasuke took a fatal hit for me in the fight that I could not avoid, he-he changed places with me …
-Did he say anything? What where his last words? Please tell me Naruto. Cried Sakura while hugging her dead husband. Sarada was trying and failing to comfort her mother and while herself started to tear up.
-He said that just like Obito and Kakashi he too must never abandon his comrades.
When Sakura heard this, she knew what she had to do. She took Sasuke body and ordered Naruto to go with her. Naruto was scared of the sudden change in Sakura demeanor but trusted his old teammate.
Naruto motioned to Hinata who was around to take care of Sarada and started following Sakura to the command tent. There he saw that Sakura forcefully emptied two tables and put Sasuke on one of them.
-Naruto… While you were fighting earlier, Sasuke and I discussed that the dimensional power of the enemy was too strong even for him to fight. Therefore, he decided that in case of emergency in order to save everyone to give you his eyes.
-I understand Sakura…if there was another way…
-No Naruto, you know how stubborn he was, now lay down and I will start the operation.
-Ok. 'Furball please stop the healing and start gathering nature chakra'
-'It will be done Naruto, just so you know with this you will be the next Sage of Six Paths'.
-'I know my old friend, maybe with this way we can stop all the deaths and future wars'.
-Naruto?
-Yes Sakura, I am sorry, I am ready now.
-Good please tell Kurama to stop healing you.
-Already done Sakura.
-This will hurt a lot since there is no time for a normal operation.
-All right.
With this Sakura started working, she was very sad that she will not be able to see Sasuke before her death but a part of her was happy that she would see his eyes and legacy in Naruto and Sarada.
The operation lasted little over 10 minutes. Naruto grunted in pain but it was not the worse pain he ever felt and the loss of his brother was even worse. Now he knows what Nagato felt when he saw Yahiko die in front of his eyes and wanted pain on all the world.
-Naruto you can ask Kurama to slow heal your eyes. We do not know what effect his chakra might have.
-'Kurama you can start now'.
-'Aye… and for all that matters I am sorry about the Uchiha, he…was different than the others'.
-'I…Thank you Kurama'.
The pain in his eyes started to lower itself to a stinging and then he felt it. The part of sage's soul that was in Sasuke eyes united with his like a puzzle piece and then he opened his eyes. He felt some tingling on his head but he did not think anything about it.
Sakura gasped at this, his eyes were not like Sasuke's half Mangekyo Sharingan half Rinnegan, but they were both Rinnegan with nine tomoe each. In addition, the hair, the hair was grey. Naruto started to stand up but he was becoming dizzy from the new colors or lack of them and view of chakra.
-Take it slow Naruto.
-There is no time, Boruto is still fighting Kawaki and who knows what the Kara is doing in the other nations, not to mention the remaining Otsutsuki.
He slowly started to go out of the tent. When Hinata and other ninjas saw him, they all were frozen and some bowed at him, not as the Seventh Hokage but as the new Sage of Six Paths. Once he reached the barrier, he took one look back at the people there, his family, his friends, and the future.
-I will protect everyone, it's a Promise!
-'Kurama are you ready to kick some ass?'
-'…' he hears much noise coming from inside his soul where Kurama was resting.
Naruto closed his eyes for a second and when he opened them, he was surprised. All the tailed beasts where there arguing, But when they saw him, or more exactly his eyes they all shut up.
-'Uhm guys…what are all of you doing here?' asked Naruto confused.
-'Well I think the answers is obvious now that we saw you Naruto' the strong voice of Gyuki answered him.
-'Yes we can see that now…'said a fearful Shukaku.
-'If you would shut up your complaining for once and listen to me we would've avoided all this insanity' said an annoyed Kurama.
-'Uhm can someone explain to me what is so obvious?' Deadpans Naruto.
-'Naruto before we gave you a part of our chakra, to aid you in the last war' says Son Goku hotly as ever.
-'And now that you have old man eyes that chakra acted as a beacon to us and we followed it because we thought it was our father calling us'.
-'I understand now, that is cool right, does that mean that I can use your chakra too?' asked a happy Naruto, happy that his tailed beast friends where there with him in this time of need and happy at the possibility of being even stronger and finishing all the hell that was happening around.
-'You can always try' said Matatabi.
-'Let's go kick some fake god's ass' said Naruto and left for the outside world.
He could not explain it but the world was different trough the new eyes, sharper, clearer and he could see his connection with it.
-'Kurama give me the chakra, also you guys try to contribute as you can'.
#Safety Barrier#
Everyone felt it, a change in the air, a static discharge that raised their hair on ends and the feeling of extreme hope. Slowly Naruto was changing to his sage mode, but with some differences. Gone was the flaming golden aura to be replaced with a silver one, the 9 Truth Seeker orbs were bigger and felt heavier, his cloak was longer and plain white.
Naruto felt different too, he could feel everyone and everything, every chakra in the world, from stones to trees, from insects to animals and then he felt it. The nature was crying, hurt by the abuse of its life and gifts.
-'Guys... why i feel so much pain and sadness' asked an even sadder Naruto.
-'Naruto... i don't know how to say this but we are not lucky anymore' answered Chomei.
-'What do you mean Chomei?'
-'Naruto try to feel the life of humans' indicated Kurama.
Naruto took a second to concentrate and then fell on his knees crying.
-'What... why there is so little people alive in the world?' asked a desperate Naruto.
-'It seems that Kara mission is to clean the world for the Otsutsuki...' offered a sad Kurama, sad because he didn't know how to help his human.
-Naruto what is wrong? Is Boruto ok? Asked a scared Hinata thinking something happened to their son.
The other ninja around too were both confused and terrified at the sight of their Hokage after he just obtained an overwhelming power now he was kneeling and crying in front of them. Meanwhile Naruto was having an internal struggle, he just promised that he would protect everyone, but it was too late, more than half of the world was dead. He was desperate, for all the power he had, he could not revive everyone, at least not after he fought all the Kara and remaining Otsutsuki, he might've been on par with the Old Sage but he was not a god.
'What would Old Sage Hagoromo do?'Naruto thought. When he left the living world to travel trough chakra and observe the future he was at peace that it will go forward and survive, but Naruto now could not sacrifice himself to save everyone because this world enemies would still be alive, and if he would fight it would be too late to revive them. It was Naruto toughest decision.'What would Sasuke do?'
'Wait, travel through chakra?' he asked himself, and then it clicked. If the sage could travel forward in the future trough chakra, why he could not travel backwards, to stop everything from happening or at least give the world a chance at winning.
With new resolve and the decision already taken to fix the past and the many mistakes of the previous generation, Naruto raised himself steady and straight. The ninjas saw this and brightened and started cheering, they were thinking that their hero found himself and hope in keeping his promise to protect them.
Turning around Naruto suddenly flashed near Hinata and hugged her hard. He also looked towards the place where his son and the enemy was fighting, proud of his legacy.
-Hinata, the world is dying, half of it's people are already dead and the numbers are dwindling fast. I have found a solution and i hope in the next life i will fix the mistakes i have made. Said a serious Naruto with kind eyes to his wife.
-Naruto, i will always love you now and forever. Said a tearing Hinata, but stayed strong for him as she promised herself long time ago.
-This is not a goodbye, i know we'll meet again.
With this Naruto flashed in the sky, to take a last look at the world, at his village, at his family and friends.
A/N: Hello everyone, thank you for your patience, here ends the prologue with you guessed a cliffhanger, but do not despair in a couple of hours i will upload the next chapter.
Thank you again for the reviews, i will try with time to fix my writing style and grammar.
Stay tuned.
P.S.: Some information.
I will follow the cannon closely for my timeline but adjust it for the butterfly effect.
I will try to limit the bashing and cliche moments.