It changes the dynamic between Naruto and Sasuke. Usually, they are rivals turned friends, but in this fanfiction, Naruto's hatred for the Uchiha clan would put a huge strain on their relationship. It might lead to more intense and bitter confrontations.
Well, it would definitely strain Naruto's relationship with Sasuke. Since Sasuke is an Uchiha, Naruto's hatred towards the clan would put a huge rift between them. They might not be able to have the same kind of bond as in the original story.
In the fanfiction, it could be that Naruto has had some personal negative experiences with Uchiha clan members. He might have witnessed some Uchiha using their power to bully or oppress others. Naruto, being the kind - hearted person he is, would not tolerate such behavior and thus develop a hatred for the clan as a whole. This could also be related to the Uchiha's reputation for being a bit of an outcast clan, and Naruto might see them as not fitting into the harmonious village life he envisions.
It could also be because of the Uchiha clan's perceived aloofness. The Uchiha might seem standoffish and exclusive, which could make Naruto, who values friendship and community, dislike them. They may have a reputation for being more concerned with their own clan's affairs rather than the well - being of the whole village.
If Naruto saved the Uchiha clan, the story of the Hidden Leaf Village would be rewritten. The history of the Uchiha's massacre would no longer be a dark stain on the village's past. The Uchiha would contribute their unique skills and abilities to the village's development. For example, their Sharingan abilities could be used for better security or in battles against common enemies. There would also be a change in the relationships between characters. People who were once enemies of the Uchiha might have to learn to work with them.
The village of Konoha would also be in turmoil. The Uchiha were an important part of the village. Their massacre by Naruto would create a huge rift among the villagers. Some might support Naruto, believing he had a good reason, while others would be horrified and demand justice. It could lead to a civil war within the village.
In many fanfictions, the scenario of Naruto and Itachi killing the Uchiha clan is a very interesting but also controversial topic. One aspect could be the change in Naruto's character. Usually, Naruto stands for justice and protecting others. If he were involved in such a massacre, it would be a huge deviation from his original character. Maybe in the fanfiction, there could be some extreme situations that force him to do so, like being mind - controlled or having some false information.
One way Naruto could save the Uchiha clan in fanfiction is by using his influence. Naruto is highly respected in the village. He could convince the village elders to re - evaluate their treatment of the Uchiha. He might show them that the Uchiha were being wrongly persecuted and that there was a way to co - exist peacefully. He could also use his power as a Jinchuuriki to protect the Uchiha from any external threats that might be a factor in their downfall.
In some fanfictions, Naruto might have an Uchiha bloodline awakening due to some unforeseen circumstances. This could lead to him developing Sharingan-like powers that are different from the norm. For example, his Sharingan could have a unique ability related to his Uzumaki chakra, creating a whole new set of jutsus and combat styles for him.
Well, one possibility is that Naruto would be trained in the unique Uchiha techniques. He might learn how to use the Sharingan in ways that no one expected. Also, he could gain a new family within the Uchiha clan, which would change his whole perspective on life and belonging.