The plot might involve Naruto being transported to a different realm where the concept of battle avatars exists. He discovers his connection to Asura there and has to learn how to control his new battle avatar powers. He could team up with some local allies and fight against an evil force that is trying to take over that realm as well as find a way back to his own world.
Well, it could be about Naruto somehow getting the power of Asura and having to face off against a powerful enemy in a battle avatar form. Maybe he has to protect the Hidden Leaf from a new threat that only his newfound power can defeat.
It could be Orochimaru. He's always been interested in power and with Naruto having the Asura power in this fanfic, Orochimaru might see it as a great opportunity to steal that power for himself and use it to create an even more powerful battle avatar.
The fanfic could involve Asura taking Naruto to some secret places for training. There, Naruto might discover hidden aspects of his own heritage. He could also meet other powerful beings related to Asura. Asura could train Naruto to master his emotions better, which is crucial in the ninja world. This training would help Naruto make more rational decisions during high - stress situations like in the middle of a war or when facing a powerful enemy who tries to manipulate his feelings.
Perhaps in this 'emperor naruto avatar fanfic', Naruto is made emperor due to his heroic deeds in both worlds. As emperor, he has to deal with political intrigue. He might have to form alliances with different clans from the Naruto world and different tribes from the Avatar world. His friends from both universes would help him, like Sasuke and Aang. They could teach each other their unique skills and fight against common enemies who oppose Naruto's new rule.
Maybe in the fanfic, an avatar in Discord gains the power of Naruto. This avatar then starts to cause chaos in the Discord world, using Naruto's techniques like the Rasengan. Other avatars have to figure out how to stop this rogue avatar, and they might seek help from the real Naruto in his own universe.
Well, a cool plot might involve Naruto being transported to the Avatar world. He gets mistaken for a powerful bender at first. As he tries to figure out how to get back home, he helps the Avatar and his friends in their fight against the Fire Nation. Along the way, Naruto teaches them some of his ninja skills like stealth and quick combat moves, and in return, he learns about the different types of bending. Maybe there could be a big showdown where Naruto's Rasengan combines with Aang's airbending to defeat a huge threat.
The plot of 'naruto is the new avatar fanfiction' could be that Naruto is reincarnated as the new avatar. He wakes up in the Avatar world with no memory of his previous life as a ninja. As he discovers his new powers, he also realizes the great responsibility that comes with being the avatar. He then embarks on a journey to master all the elements and stop an evil force that is threatening to destroy the world, using his ninja - like tenacity and strategic thinking.
Perhaps in this fanfic, Naruto would be confused by the concept of the Avatar at first. But as he gets to know more about it, he realizes the similarities between his world and the Avatar world in terms of protecting people. He might also have some interesting interactions with the different tribes in the Avatar world, like the Fire Nation. And who knows, he could even find a way to use chakra to enhance bending abilities.
There could be new antagonists created specifically for this fanfic. Maybe some dark forces that were sealed away by Asura long ago are awakened. They would oppose Naruto because they see him as a threat to their resurrection or their evil plans.
One possible plot could be about how the tribe prepares for the new arrival. They might gather special herbs and create a new dwelling for the growing family. Neytiri could also face some challenges during her pregnancy, like dealing with new fears and the extra protection she needs in the dangerous Pandora environment.
Well, perhaps in this fanfiction, the Avatar enters the Naruto universe and causes some sort of imbalance. Naruto, seeing the chaos it might bring, decides to seal away the Avatar. As time passes, Naruto starts to learn more about the Avatar's world and realizes that there are good things about the Avatar too. So he begins a journey to find a way to unseal the Avatar without causing more harm, all while facing enemies who want to use the situation for their own gain.