If Naruto were Itachi's older brother in fanfiction, the story would be drastically different. For one, Naruto's positive influence might have changed Itachi's path. Itachi was forced into many difficult decisions in the original story. With Naruto as an older brother, he could have had more support and might not have made the same choices regarding the Uchiha massacre. Naruto's ideals of friendship and never giving up could have rubbed off on Itachi, leading to a more optimistic Itachi. Also, the relationship between Konoha and the Uchiha might have been better managed with Naruto's presence as he is known for his ability to bring people together.
Well, in such a fanfiction, Naruto being Itachi's older brother would mean a whole new dynamic for the Uchiha clan. Naruto's strength and determination could have inspired Itachi to be more open about his problems. Since Naruto has a knack for making friends, he might have introduced Itachi to different people in the village, breaking the isolation that the Uchiha felt. This could have reduced the tension between the clan and the village. And when it comes to Itachi's skills, Naruto could have trained with him, enhancing both of their abilities and creating a stronger duo that could have changed the face of many battles in the Naruto universe.
If Naruto were Itachi's older brother in fanfiction, the power dynamics in the Uchiha clan could be very different. Naruto's influence might prevent the Uchiha massacre. He could use his positive and determined attitude to change Itachi's view of the village. Also, Naruto's relationship with Sasuke would be completely redefined, as he would be Sasuke's older brother's older brother. This could lead to a more united front against the real threats in the Naruto world.
Well, if Naruto were Kushina's older brother, the whole story of Naruto would be turned on its head. The story would start with Naruto already having a family connection to the Uzumaki clan. His training and development would likely be different as he would have grown up with Kushina. He might have learned some unique Uzumaki techniques from their family. His relationship with the other characters would also change. For instance, his relationship with Jiraiya might be different as Jiraiya might also see Naruto in a different light due to his relation to Kushina. And when it comes to the big events in the Naruto universe, Naruto would be in a position to directly influence Kushina's actions, which could change the course of many events.
In the fanfiction, the older brother could change Naruto's view of his family and his place in the world. Naruto would have a connection to his past that he didn't know before. This could lead him to explore more about the Uzumaki clan and discover hidden powers or knowledge. And it could also affect his relationships with Sasuke and Sakura. For instance, his brother could help him understand Sasuke's pain better, leading to a different dynamic between them.
Their relationship would change in many ways. Firstly, Naruto would be more involved in Gaara's life. He would probably train with Gaara more often, teaching him new techniques. Secondly, Naruto would be a source of emotional support for Gaara. Given Naruto's positive attitude, he could help Gaara overcome his past traumas more effectively. And finally, they would have a stronger sense of loyalty towards each other. In battles, Naruto would not hesitate to put himself in harm's way to protect Gaara, and Gaara would do the same for Naruto, much like a real - life brotherly relationship.
It changes it significantly. Naruto being older might mean he doesn't idolize Itachi in the same way. He may see Itachi more as an equal or even a rival. For instance, instead of blindly following Itachi's lead in certain situations, he could offer his own solutions based on his more mature judgment.
His sense of family would be stronger. Naruto has always longed for family, and having an older brother would fulfill that to some extent. This could make him more empathetic towards others who are also missing family members. He might also be more cautious in battles, as he wouldn't want to let his brother down.
Their family interactions would be quite interesting. Naruto, being the older brother, would probably be very protective of Itachi. He would be the one to stand up for Itachi in family disputes. Itachi, on the other hand, would look up to Naruto and respect his decisions. At the dinner table, Naruto might share his wild adventures in the village with Itachi, and Itachi would listen intently. They would also train together in the family compound, with Naruto pushing Itachi to be better while also making sure he doesn't overdo it.
If Naruto were Itachi's twin in fanfiction, it would have a huge impact on the plot. Naruto would grow up with different values perhaps, influenced by the Uchiha clan's way of thinking. His goal might not be just to become Hokage in the traditional sense. He could be more focused on avenging the Uchiha clan or restoring its honor. The power balance in the village would shift too. The Uchiha clan might have a stronger standing with Naruto being part of it. And the mystery surrounding Itachi's actions would take on a new meaning for Naruto, as he'd be directly related. He might be more involved in uncovering the truth about Itachi's motives much earlier in the story.
Naruto would likely become more stealthy. Itachi is known for his stealth and if he trains Naruto, Naruto would pick up some of those skills. He might start to rely less on his brash and straightforward fighting style and incorporate more subtlety.
Naruto and Itachi's friendship could also have an impact on Sasuke. Instead of Sasuke's single - minded pursuit of revenge against Itachi, he might see that there is another way. Itachi and Naruto could work together to bring Sasuke back to the right path, which would completely change Sasuke's story arc and also the overall story of Naruto.