The entire ninja world's view of good and evil would be challenged. Naruto was always on the side of good, but as Lucifer, he represents a different set of values. This could cause a moral crisis among the ninja. Young ninja who looked up to Naruto would be confused. The shinobi code might need to be re - evaluated. Also, the spiritual balance in the world, which was maintained by the natural chakra and the various jutsu, would be thrown off. Naruto's new Lucifer - like powers, which could be based on dark and unknown energy, would disrupt the existing energy flow and could potentially lead to disasters such as natural catastrophes or the awakening of ancient evils that were once sealed away.
The impact would be huge. Naruto has always been a symbol of hope and friendship in the Naruto world. If he becomes like Obito, that symbol would be shattered. His friends and allies would be in shock and confusion. Konoha would likely be thrown into chaos as they try to figure out what happened to Naruto and how to deal with his new, potentially dangerous mindset.
The Naruto world would be in chaos. Naruto has always been a symbol of hope and light. If he turns into Darth Sidious, all the values he once represented would be shattered. His friends would be in shock and confusion. The villages that once relied on him would now fear him. The power balance in the ninja world would be completely disrupted as he would likely use his new - found dark powers to rule with an iron fist.
The ninja way as it is known would be completely overturned. Naruto has always represented values like friendship, hard work, and never giving up. As Sauron, he would promote values of domination and power over others. Shinobi training might change to focus more on dark arts and subjugation. Younger ninjas would be influenced by this new Naruto, and the future generations of the ninja world would be shaped in a very different and darker way.
One big impact would be on Naruto himself. Having his mother back would give him the family love he always longed for. He would have someone to share his problems and joys with on a more personal level.
It could change the power balance in the ninja world. Other villages might see Konoha as a much greater threat with Minato and Kushina back. On the other hand, it could also lead to more cooperation as they might be seen as a symbol of hope. Emotionally, for Naruto, he would be able to learn more about his family, his heritage, and maybe even get some long - awaited parental guidance which would further develop his character.
On a personal level, for Naruto, it would mean having his parents around. He could finally experience a real family life. Kushina could teach him more about the Uzumaki clan's techniques and traditions. Minato could train Naruto further in his unique jutsu. Emotionally, it would be a great comfort for Naruto and many of his friends who knew about his longing for his parents.
Since Kurama has a vast amount of knowledge and power, he could guide Naruto in ways that no one else could. Naruto could learn to transform into different forms of the Nine - Tails more easily and use that power more effectively in combat. This would make his training more focused on harnessing his in - born abilities.
In a time travel fanfiction where Naruto marries Kushina, the impact on the Naruto world would be multi - faceted. Genetically, it's a very strange situation. But if we look past that, politically, their union could bring about peace faster. Since Naruto has the ideals of the future and Kushina has the influence of her clan in the past. Socially, it would shock many. People would have to adjust to this new relationship. And in terms of the ninja arts, Naruto could teach Kushina some future techniques, and she could pass on her unique skills to him, changing the way battles are fought in that time period.
Well, if Naruto becomes the Kyuubi in the fanfiction, he would likely have an overwhelming amount of power. He might be able to defeat his enemies with ease. But he would also face the struggle of controlling such a powerful and wild force inside him. Maybe his friends would be both in awe and a bit scared of him at first.
It would create a huge shockwave. Naruto is a central figure, and his actions towards his family would change the dynamics of all his relationships. His friends would be deeply divided. Some might try to stop him, believing there must be a misunderstanding, while others might be swayed by Naruto's determination. The ninja villages would also be affected. Konoha, in particular, would face an internal crisis as Naruto is one of its most important assets. His revenge could lead to a split in the village, with some supporting Naruto and others standing by his family.