Disclamair: I do not own naruto or any of the characters involved as everything rightfully belong to kishimoto.
In the dimension, Kaguya Otsutsuki has created the last defence of the shinobi nation stood. Our hero Naruto Uzumaki in his sage of six path mode with nine kage bunshin gathering the chakra mixed with that of all the tailed-beast, to launch an attack in order to weaken the Rabbit Goddess and avenge the sacrifice of Obito Uchiha. With him stood Sasuke Uchiha with perfect Susanoo radiating with power. Sasuke attacked first, going straight to Kaguya in order to pierce her with Chidori lightning up on the primary left hand of his Susanoo. In an attempt to avoid the attack Kaguyas attention focuses on Sasuke and this distraction allows naruto to sever the arm holding black Zetsu and slam all nine tailed-beast Rasenshuriken on Kaguya.
The Chakra of tailed-beast in the rasenshuriken reacted to their tailed-beast chakra that was absorbed by Kaguya and cause her to lose control. As uncontrolled chakra was released forming a chaotic creature that resembled nothing as their originator as a whole but individual parts resembling each tailed-beast could be seen.
The chakra monstrosity formed arms and mindlessly reach out to grab anything it could to absorb in search of the consciousness that once guided it. Naruto and Sasuke saved by Naruto's clones as the arm of the creature reached out to them. Sakura Haruno, the last member of the team watches helplessly as the arm of the creature just a small distance away to end her life at such a speed which is too fast for her to evade.
Sasuke and Naruto watched with horror on their faces as they were too far away and had too little time to save their teammate as the chakra arm of the creature reaches to Sakura.
As this was going on the last member of team 7, Kakashi Hatake the sensei of the three and wielder of the Sharingan which was restored and strengthened as a final gift from Obito formed a perfect Susanoo and saved his kunoichi student in the nick of time. ''Thank you, Obito''. Kakashi thought. ''Let's watch over the next generation together. This time I will save them and the entire world! ''
''Hell Yeah" Naruto cheered.
''Hn? That's impossible; he lost the use of his Sharingan. Sasuke said.
'' Teme, he is our sensei, of course, he will be as awesome as we are'' Naruto yelled
''Kakashi sensei, Sasuke can you hold her down while I prepare to get its chakra back to the tailed-beast'' Naruto said.
The two massive chakra construct surged forward forming swords trying to stall the unstable chakra beast. They focused on cutting any hand that grew out from the main body of the creature. Naruto meanwhile was creating a beacon from the tailed-beast chakra to lure the mindless chakra into the bodies of their originators. As the chakra creature break free from Sasuke's hold the unstable mass suddenly expanded, with the way clear after forcing Sasuke and Kakashi away and Naruto's chakra beacon attracting it towards naruto's chakra planning to absorb it. Naruto formed nine tails of chakra with the head of each beast forming at the end and connecting with the arms of chakra monster.
Naruto forms hundreds of kage bunshin and starts pulling the chakra of tailed-beast from the massive creature with clones grabbing the tails and pulling with all their might. As the monstrosity pull is still stronger than Naruto, he formed ten more clones and each instead of forming their own Rasengan starts forming a combined with nine clones channelling nine tailed-beast chakras and one stabilising it to form a big Rasengan with nine Rasenshuriken blades, one each for the tailed-beast. The last clone throws the combined Rasengan and it slammed into the monstrosity drilling and piercing it and destabilising it enough for a final pull of chakra from Naruto the creature loses the last bit of control over the chakra and Naruto was to take full control of it and yanked it out and forming the tailed-beast which was sealed in the creature leaving Kaguya on the ground .
As the tailed-beast return to their original form Kaguya's eyes snapped open "How dare you; to take what is mine". she cursed
''It was never your; all the people, their past their present, their future that you destroyed, all for power which was never yours to take'' shouted naruto
With that naruto signal, Sasuke and both as one ran toward Kaguya intending to seal her in her weakened state but, Kaguya flows in the air avoiding both the attacks and fired two all killing-ash bones towards Naruto and Sasuke. They both avoided it and jumps back. Naruto forming clones surrounded Kaguya and start attacking her. Kaguya still powerful enough that she destroyed most of the clones in few seconds by hardening her air and firing it in all direction
Kakashi still in his Susanoo with sakura attack Kaguya with his blade. Kaguya sensing the attack sends an all-killing ash bone towards him.
'' With the bonds reinforced, the gift of Obito is even more powerful'' thought Kakashi as he used Kamui to let the attack pass through him and falling out of his Susanoo and uses Kamui- lightning blade to slash Kaguya.
As Kaguya was shocked from the attack Sasuke with his rinnegan switch himself and Naruto with the remaining clones and attempts to seal her.
Kaguya having too little time to react send an all-killing ash bone towards Naruto and starts flying higher to get away from them. Kakashi seeing the attack towards naruto uses Kamui and sends it to another dimension.
As Kaguya tried to escape the sealing technique of Sasuke and Naruto, Sakura jumps from above and punches Kaguya on the head stopping her attack.
''Shannaro''. Shouted sakura
With their team members help Naruto and Sasuke touches Kaguya and initiates the sealing process. Kaguya seeing the end thought ''Again, I was betrayed by my own son's''
As Kaguya was sealed the dimension they were in, which was created by Kaguya become destabilised and hundreds of portals start opening randomly and rapidly all over the places.
''This place is going to collapse, we have to find a way to escape" shouted kakashi. As they were thinking of a plan a portal opens before him and shows the sage of six paths with four hokages standing there.
'' Come on everyone we can't keep it open for a long time'' said Minato Namikaze The fourth Hokage.
As they were escaping a portal opens below Sasuke's feet and starts dragging him in.
"Sasuke" shouted Sakura
As Naruto hears sakura he looks and finds Sasuke getting pulled toward the portal. Naruto without thinking dives towards the portal and pushes Sasuke out. After he saves Sasuke his mind understands what he has done, he shares a look with his father, team and sensei trying to say all he can before the portal closes and Naruto was gone.
"Why?" shouted Sasuke not able to believe what Naruto has done.
Sakura looks where Naruto has been just a few seconds ago, Crying not able to comprehend what had occurred stays silent.
''Again, I was not able to save what is precious to me" thought Kakashi as a lone tear escapes his eyes.