In the Sannin era, Naruto's Rinnegan would be a very unique and powerful thing. He could use it to see the chakra flows in a more detailed way than the ninjas of that time. This would give him an advantage in battles and also in understanding the secrets of ninjutsu. He could potentially discover new forms of chakra or even find ways to control natural energy in a different way. His actions would not only impact the Sannin and their relationships but also the development of ninjutsu as a whole in that era. He might even start a new trend of ninjutsu development that would be different from what actually happened in the original Naruto story.
He could change the fates of the Sannin. For example, if Naruto helps Jiraiya in his battles, Jiraiya might not die later. This would have a huge impact on the overall Naruto story. Also, Naruto's Rinnegan abilities could make him a target for the villains of that era. They would either try to steal his power or kill him, which would create new storylines.
One possibility is that Naruto with his Rinnegan powers could disrupt the power balance in the Sannin era. His modern jutsu and knowledge might give him an edge. For example, he could use his Rasengan in ways that the shinobi of that time have never seen. He might also form unexpected alliances, like befriending Orochimaru before he goes bad, which could change the entire future of the Naruto world.
Sasuke's abilities would be both advanced and out of place. His Sharingan skills would be very powerful compared to most in the Sannin era. But he would lack some of the basic knowledge and skills that were common in that time. For example, he might not be as well - versed in some of the traditional ninjutsu styles.
If Naruto had the Rinnegan and could time travel, one possible way the story could unfold is that he might go back to prevent some of the great tragedies in the Naruto world. For example, he could stop the Uchiha massacre. With the power of the Rinnegan, he would be able to anticipate and counteract the actions of Itachi and Danzo. He could also use his time - traveling ability to gain more knowledge about the origin of the ninja world and the secrets of chakra, which could make him even more powerful and better equipped to protect his village and friends.
The story could start with Naruto suddenly finding himself in the past with Kushina. He'd be shocked at first but then realize the potential of his Rinnegan in this new situation. He might start by using it to gather information about the past and any threats that could harm Kushina or the village in the future.
Orochimaru's experiments and his knowledge of forbidden jutsu would be far ahead of the time he travels back to. He could use this to his advantage, perhaps by creating new techniques based on the limited knowledge of the past. However, he also has to be careful not to change the future too much as his actions in the past could have unforeseen consequences for his future self.
The other ninja villages would view Naruto very differently. They might see him as an even greater threat now. This could lead to more tense relations between Konoha and the other villages. At the same time, some younger ninja from other villages might idolize Naruto even more and try to learn from him, hoping to gain some of his power. This would create a complex web of relationships and power dynamics in the Naruto fanfiction world.
The Rinnegan can be used in time travel fanfiction in Naruto in various ways. It could be used to open portals to different time periods, kind of like how it can create spatial portals in the original series. For example, a character might use the Rinnegan to travel back to the era of the First Hokage to gain knowledge or power.
Well, when it comes to Naruto time travel and Rinnegan in fanfics, it's often about exploring new storylines. Maybe Naruto himself gets the Rinnegan and travels back in time to train his younger self. This would make him a much more powerful ninja at an earlier stage and could completely change the power balance in the Hidden Leaf Village and among the other ninja villages as well.
At first, their relationship might be one of mistrust. Anko would be wary of this Naruto with the strange Rinnegan who claims to be from the future. But as they face challenges together during their time - traveling adventures, they would start to respect each other. Eventually, they could become friends or even more, depending on how the story unfolds.
The Rinnegan's time travel can completely change character relationships. For example, if a character travels back in time, they might meet their friends or enemies at a different stage of their lives. In a harem fanfiction, this could mean that a male character meets a female character before she has certain prejudices or before she has fallen in love with someone else. So, the time travel allows for a fresh start in the relationship.