Naruto and Sasuke are the only ones who survived from kaguya’s last attack, and now are all alone in the void.

In the end, not wanting to spend the rest of their life in that place, agreed to create a new world, a world where bloodshed and war will never be that severe as it was

Naruto and his best friend and rival Sasuke have failed the elemental nations,everyone is dead except them and the tailed beasts, they started creating races, animals, new source of power, magic, which is essentially powered by emotions, they were made into history, which made into stories, which made into legends, which made into myths. They took any chakra consuming and scrolls mentioning and hid them in places very hard to find.