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 could also be a situation where Naruto gains the ability to communicate with the spirits of his parents. They guide him to a way to change the past. He then follows their instructions and uses his own strength and the support of his friends to rewrite history and save them from their doomed fate.
In some fanfictions, Naruto might find a super - powerful jutsu or artifact. For example, he could discover a long - lost forbidden jutsu that has the power to bring the dead back to life. Or perhaps he stumbles upon a magical item during one of his adventures that is said to be able to revive the deceased.
It could be a complex plot where Naruto, disillusioned with the shinobi world for some reason, decides to create a new identity as the Masked Man. He might have seen too much corruption or pain and believes that by operating from the shadows as the Masked Man, he can bring about real change. He could be using the mask as a symbol to strike fear into those who are causing harm, while also trying to protect the ones he loves without them knowing it's actually him.
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.
It could also be due to a prophecy. Suppose there's a prophecy that Naruto will bring great disaster in the future. His parents, believing in the prophecy, might decide to disown him in an attempt to avoid that future. They might think that by cutting ties with him, they can somehow change the course of events.
In this fanfiction, it could be that Naruto's parents were under some sort of mind - control. Some evil entity could have taken over their minds and made them feel hatred towards Naruto. Also, it might be related to a family secret or feud. There could be something in the family's past that made them believe Naruto was a stain on their family name, even though Naruto himself was innocent. It could also be a case of false information being spread around the village which made his parents believe lies about him.
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.
In fanfiction, anything can be possible. Maybe some alternate universe scenario was created where Naruto and Yugito met under different circumstances. For example, if there were different political alliances in the ninja world that brought their two villages closer together. This could have led to more interactions between them and eventually a relationship that resulted in a daughter.
Well, in a really dark and twisted fanfiction, Sasuke could be under some sort of mind - control spell. The spell could be so strong that it overrides his feelings for Naruto. He might then attack and kill Naruto without fully realizing what he's doing. But in the real Naruto lore, their friendship and mutual respect are so strong that this is highly unlikely.
In a fanfiction context, it could be possible through some creative plot devices. Maybe a powerful jutsu was used that altered their memories or destinies. For example, a rogue ninja with a forbidden time - bending jutsu made them believe they were in love and got married. It could also be due to some sort of political alliance gone wrong in a strange way, where they were forced into a marriage - like situation and over time, developed real feelings for each other.
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.