One consequence could be an imbalance in the world's population. There might be too many people for the existing resources, leading to shortages of food, water, and living space.
Well, in some fanfictions, Naruto might use some super powerful jutsu that he either discovers or creates. Maybe it's a new form of the Rasengan combined with some sealing techniques. It could also be that he taps into some ancient power or makes a deal with some sort of god - like entity within the Naruto universe.
One consequence could be that Naruto is seen as a hero by some, but also as a rule - breaker by others. The ninja world has rules about bringing back the dead, and Naruto's actions might stir up controversy. Some might fear that this new ability of his could be misused. Haku, on the other hand, would have to adjust to a world that has changed since his death. He might face challenges in reconnecting with his old friends or finding his place in the new ninja world.
In the Naruto universe, bringing someone back from the dead is extremely difficult. While there are some jutsu like the Edo Tensei that can reanimate the dead, it has its limitations and is often considered dark magic. For Naruto to revive Jiraiya, he would need to find a way around the natural laws of life and death. However, in fanfiction, anything is possible as it allows for creative interpretations and bending of the established rules.
One consequence could be a change in the family dynamic. His mom would be back, and Naruto would finally have the family he always dreamed of. This might also have an impact on his relationship with his dad, as they would all be together again.
Well, it could be a very creative take on the Naruto story. The author might be exploring themes of second chances, the power of the divine, and the importance of Naruto to the Naruto - verse. Since Naruto is such a central character, his revival by Kami could change the entire course of the story. It might lead to him uniting different ninja clans in a way he couldn't before, or it could be about him facing new and even more dangerous threats that only he, with his new - found life, can handle.
One challenge could be getting the necessary resources. Uzushiogakure was destroyed long ago, so finding materials to build the village again would be tough. He might have to negotiate with other villages for supplies.
Obviously Naruto is one of the main characters as he is the one being revived. And Kami, who is performing the revival, is also a crucial character. There might also be other characters like Sasuke, Sakura, and Kakashi who could be involved in the story after Naruto's revival. For example, Sasuke might be initially skeptical about Naruto's return or Sakura could be overjoyed and help Naruto get back to his normal self.
Well, one possible plot could be that Naruto discovers some ancient and powerful jutsu that allows him to reach across different dimensions or realms to revive Issei. Maybe Naruto is on a mission to save the world from a new threat and he realizes that Issei has some unique power or knowledge that can help. So he uses this jutsu, brings Issei back, and then they team up to face the common enemy.
In a fanfiction where Naruto revives Kaguya, it could lead to chaos. Kaguya was extremely powerful and her revival might put the ninja world in danger again. Naruto might have his reasons, like seeking more knowledge about the origin of chakra, but he would also have to face the consequences of bringing back such a powerful and potentially malevolent force.