In terms of the village, Minato was a highly respected Hokage. His return could bring more stability and leadership. He might also be able to help Naruto in dealing with some of the long - standing threats to the village, like the remaining members of the Akatsuki or other hidden threats. And Naruto would no longer have to carry the pain of losing his father at such a young age, which could make him an even more positive and powerful force in the village.
The impact would be huge. For one, all of Naruto's friends like Sasuke and Sakura would be devastated. Their whole world view which was centered around Naruto's positive influence would be shattered. Also, the village of Konoha would lose its greatest hope for the future. Naruto was seen as the one to bring about change and peace, so without him, the village might descend into chaos or be more vulnerable to outside threats.
The impact on the Naruto universe in these fanfictions is multi - faceted. Firstly, in terms of the political situation, Obito's change of heart could mean a shift in the balance of power among the ninja villages. His knowledge of the Akatsuki's operations could be used to prevent future threats. Secondly, on an emotional level, it would bring closure to many characters who were affected by Obito's actions. For example, Minato might be able to see his former student redeemed. And finally, it could inspire new forms of ninja training or cooperation. Naruto's ability to save Obito could lead to the development of new techniques or strategies focused on redemption and rehabilitation.
Well, in some versions of the fanfiction, Naruto might use his newfound powerful jutsu. Maybe he masters a time - travel jutsu and goes back to the moment before his father's death to change the outcome.
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.
In Naruto fanfiction where Naruto saves his parents, one way could be through time - travel. Maybe he discovers a jutsu that allows him to go back in time. He could then use his knowledge of future events and his already - developed skills to prevent their deaths. For example, he might be able to stop the Nine - Tails attack on the village that led to his parents' sacrifice.
It would also change the emotional landscape of the series. Their friends like Sakura and Kakashi would have to adjust to this new relationship. Sakura might be relieved that they are no longer at odds, and Kakashi would see a new kind of growth in his students. Moreover, their enemies would be more cautious as they would be facing two extremely powerful brothers.
If he reveals a powerful secret, it could change the power balance. Other villages might see him as an even greater threat or an ally they must court. For example, if he reveals a super - strong jutsu, enemies might be more hesitant to attack Konoha.
It could change the power balance. The Uzumaki survivors may bring back long - lost techniques. This would make Konoha and Naruto even more powerful. Enemies would have to re - evaluate their strategies.
If Naruto was born the same age as Itachi in fanfiction, it would change the power balance in the village. Naruto could be part of the decision - making processes earlier. His influence on the Uchiha clan's fate might be significant. He could use his unique ability to persuade and his strong will to try and bridge the gap between the Uchiha and the village. Also, his interactions with Kakashi would be different. Instead of Kakashi being an older, more experienced mentor, they could be more like comrades or even rivals in some aspects.
Naruto would become more introspective. He has to understand his new role as the father of the universe. His relationships with others would change too. He might distance himself from his old friends in some ways as he tries to figure out his new place in the cosmos. His ninja skills would also be adapted to the cosmic environment. For example, his shadow clones could be used to explore different parts of the universe simultaneously. He would be constantly learning about the vastness of the universe and how to best care for it.