One idea could be a story where the protagonist, with the power of Rinnegan's Shinra Tensei, has to defend a small village from a powerful and unknown enemy. They use Shinra Tensei in creative ways, like deflecting huge attacks back at the enemy.
If a character has the Rinnegan and Shinra Tensei, their personality could be shaped by the fear and respect they receive from others. For example, if they are initially shy but gain this power, they might become more confident or even a bit arrogant. The power could also make them more responsible as they realize the impact of their actions.
One interesting concept could be exploring new powers related to Shinra Tensei in the Naruto universe. For example, how a character might develop a unique version of it that has different effects like not just repelling but also absorbing energy.
Naruto himself is often a central character. Writers might explore how he could incorporate Shinra Tensei into his already vast arsenal of techniques. Maybe he learns it from a new mentor or discovers it during a self - discovery journey.
Power exploration is a common theme. Writers often focus on how the Shinra Tensei power can be developed, controlled, and used in different situations. For example, in many fanfics, the characters struggle to master this powerful jutsu.
There's 'Shinra Tensei: New Beginnings'. This fanfic focuses on a young ninja who unexpectedly gains the ability to use Shinra Tensei. It has a lot of action - packed scenes where the protagonist has to learn to control this power while facing various enemies. The plot also delves into the political aspects of the Naruto world which is quite engaging.
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.