One implication is that he becomes much more powerful. The Rinnegan gives him access to powerful abilities like the Six Paths techniques, which would change the power dynamics in battles in the fanfiction. He could now face stronger enemies more easily.
It could completely change the power dynamic in the story. Naruto with the Rinnegan would likely become almost invincible, making his battles much less challenging.
Another possibility is that it's a result of some strange chakra experiment gone wrong (or right). Scientists in the Naruto universe are always dabbling in chakra research. Maybe an experiment meant to enhance her natural abilities instead gives her the Rinnegan, and she then has to learn to control it quickly to avoid being consumed by its power.
If Naruto got the Rinnegan, he might become more cautious. The power of the Rinnegan is so great that he would realize he needs to be more careful with it. He wouldn't be as brash as before.
It could be that he was in a life - or - death battle against a powerful enemy. Maybe he was pushed to his limits, and in that moment of extreme stress and desperation, his latent power awakened in the form of the Rinnegan.
In Naruto fanfiction, the Rinnegan in Naruto is often portrayed in really cool and powerful ways. Some fanfics might give Naruto the ability to use all the Rinnegan powers to their fullest extent right away, like being able to effortlessly summon the Gedo Statue or use the Deva Path powers without any drawbacks. It's a way for writers to explore new storylines and make Naruto even more of a badass than he already was in the original series.
When Naruto achieves the Rinnegan in fanfiction, it often changes the power dynamics in the Naruto world. His newfound power might make some of his friends and allies feel a bit left behind or inferior. This could lead to some strain in his relationships. On the combat side, he could now access abilities like the Preta Path to absorb chakra attacks, which would make him extremely difficult to defeat in battle. However, this new power also comes with a greater responsibility. He may have to be more careful not to accidentally harm those around him with his more potent jutsu.
Well, if Naruto got the Rinnegan as a kid in fanfiction, it would completely rewrite the story. He'd have an edge in combat right from the start. With the Rinnegan, he could see chakra in more detail, which would make his learning of new jutsu easier. His opponents would be caught off - guard by his sudden access to such a powerful dojutsu. This could lead to some interesting plot twists, like him being able to solve problems in the village or against other ninja villages more quickly and efficiently.
A good Rinnegan Naruto fanfiction often has a strong plot. For example, it could center around Naruto's struggle to master the Rinnegan. This power is extremely powerful and complex in the Naruto universe, so seeing how he copes with it is exciting. Also, character development is key. If the story shows how Naruto changes, not just in terms of power but also in his relationships and understanding of the world because of the Rinnegan, it's a great fanfiction. Good writing style also matters. If the author can describe the battles and the use of Rinnegan - related abilities vividly, it makes the story more engaging.
A 'naruto secret rinnegan fanfic' might center around the idea of a hidden Rinnegan technique. In this fanfic, the author could be exploring how a character obtains the Rinnegan in a very different and secretive way compared to what we've seen in the official Naruto story. It could also look at how the Rinnegan interacts with other unique abilities in the Naruto universe, perhaps creating new and unexpected combinations of powers.