First, you need to do a lot of research on Naruto, the Tomoe Rinnegan power in the Naruto universe. Know how it works, who has it originally, and what it can do. Then, think of an interesting concept like what if Naruto got the Tomoe Rinnegan in a different way. Outline your story, including the beginning, middle, and end.
One interesting 'Naruto Tomoe Rinnegan' fanfiction could be one where Naruto discovers a new power related to the Tomoe Rinnegan and uses it to defeat a powerful, previously unbeatable enemy. It might involve him training in a secret dimension with the help of an ancient sage who knew about this power.
One plot idea could be that Naruto discovers the Tomoe Rinnegan during a new and powerful enemy encounter. With this new eye power, he gains abilities like enhanced space - time manipulation and can see the chakra flow in a more detailed way. This changes his fighting style and makes his enemies struggle to adapt.
I really like the fanfic 'Naruto and the Tomoe Rinnegan's Destiny'. It shows Naruto's journey with the tomoe rinnegan in a more spiritual way. He has to learn to control the power not just for fighting but also for uniting the different ninja clans. It delves deep into Naruto's character growth and how the tomoe rinnegan affects his relationships with his friends and foes alike. There are some really heart - warming moments where Naruto uses his newfound power to help those in need, which makes it a very engaging read.
Naruto would likely become more introspective. The power of the Tomoe Rinnegan is not just physical but also mental. He might start to question his place in the world more deeply, as this new power sets him apart from others. He could become more cautious in his actions as he realizes the potential destruction his new power could cause if misused.
First, you need to understand the basic concepts of Naruto, the tomoe rinnegan, and how it could fit into the Naruto universe. Do some research on existing fanfics to get an idea of different storylines. Then, start with a strong concept, like how Naruto gets the tomoe rinnegan. Maybe it could be a gift from an ancient sage or a result of a new experiment gone wrong.
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.
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.
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.