Well, it changes the story in many ways. Firstly, Naruto's power level would skyrocket. With the Rinnegan, he could use abilities like the Six Paths techniques. And the Sharingan would enhance his perception and give him new jutsu like Amaterasu or Tsukuyomi in theory. This would make him even more of a force to be reckoned with against foes like Madara or Kaguya. He could potentially end battles much quicker and might not need as much help from his friends as in the original story.
If Naruto had the Rinnegan and Sharingan in fanfiction, it would completely transform his character arc. He would no longer be just the Jinchuriki of the Nine - Tails. His new ocular powers would give him a different perspective on the ninja world. For example, the Rinnegan's ability to see chakra and the Sharingan's genjutsu capabilities would make him a more versatile fighter. This could also lead to new relationships with other characters, especially those who were previously wary of his power. Maybe Sasuke wouldn't be as antagonistic towards him if he saw how powerful Naruto had become with these new eyes.
Well, if Naruto had the Sharingan and Rinnegan in a fanfiction, he'd be insanely powerful. He could use the Sharingan's abilities like predicting movements and copying jutsu, and the Rinnegan's powers which are even more god - like. Maybe he'd use the Rinnegan to access different dimensions and with the Sharingan, be an even better fighter in close combat. His enemies would be completely outmatched.
Well, if Naruto had the Sharingan and Byakugan, his combat abilities would skyrocket. The Sharingan could help him copy enemy jutsus more effectively, and the Byakugan would give him near - 360 - degree vision. This would make him even more of a force to be reckoned with in battles against the Akatsuki. He could anticipate attacks better and counter with his own powerful jutsus. It would also change his relationships, as his new powers might make some characters jealous or more eager to team up with him.
If Naruto had a Sharingan in fanfiction, it would drastically change the story. He could quickly copy enemy jutsus like Sasuke. His combat ability would skyrocket as he could predict movements better. Also, his relationships might change. For example, his bond with Sasuke could be different as they'd both have the Sharingan. It would also make his training with Kakashi more interesting as Kakashi could teach him unique Sharingan - related techniques.
One interesting fanfic could be 'Naruto: The Dual - Eyed Avenger'. In this fic, Naruto's acquisition of the Rinnegan and Sharingan completely changes the power dynamics in the Naruto universe. His new abilities make him a force to be reckoned with, and he uses them to protect Konoha in ways no one expected.
Well, at first it might cause some strain. His sister may feel overshadowed by Naruto's new power. But as time goes on, Naruto could use the Rinnegan to help his sister discover her own latent abilities. This would transform their relationship into one of mutual growth and support. He could use the powers of the Rinnegan to train her in unique ways, and she could in turn offer him emotional support, making their bond even deeper than before.
Naruto's character development would likely become more complex. With the Rinnegan and Sharingan, he would have access to a whole new level of power and knowledge. He might become more introspective as he tries to understand and control these powers. His relationships could also change. For example, his friends might view him differently, with a mix of awe and perhaps a bit of wariness due to the potentially overwhelming nature of these powers.
Well, relationships in Naruto Mangekyou Sharingan and Rinnegan fanfiction are often re - defined. When a character unlocks the power of these eyes, their friends may feel a sense of duty to protect them from those who would seek to harm them for their power. However, enemies may target the character's loved ones to get to them. Also, in some fanfictions, characters with these eyes may form a special bond with others who have a similar power or a connection to the origin of these eyes. This can create new alliances and rivalries within the Naruto universe.
If Naruto gains the Rinnegan in fanfiction, it could change the story in many ways. For one, his power level would skyrocket. He might be able to use all the abilities associated with the Rinnegan like the Six Paths techniques. This would make him an even more formidable opponent against enemies. Also, it could change his relationships. His friends might view him differently, either with more awe or perhaps some fear due to his new, extremely powerful ability.
One possible fanfiction could be about a character who has the unique ability to combine the powers of the Sharingan, Rinnegan, and Byakugan. For example, this character might be a long - lost descendant of powerful ninja clans. They could use the Sharingan's precognitive abilities to anticipate an enemy's moves, the Rinnegan's power over life and death in battles, and the Byakugan's long - range vision to scout out the battlefield. This would make them an extremely formidable foe in the Naruto universe.
If Naruto had both in fanfiction, he'd be insanely powerful. His combat abilities would skyrocket. He could use the Sharingan to quickly analyze his opponents' moves and the Rinnegan to counter with powerful six - paths techniques. For example, he could use the Sharingan to predict an enemy's attack and then use the Rinnegan's Deva Path to repel it with ease.