In a fanfiction where Naruto is hired by Palpatine, one possible scenario is that Naruto's sense of justice clashes directly with Palpatine's tyranny. Naruto, being used to a world where there are clear good and bad guys, would quickly realize that Palpatine is on the wrong side. He might try to persuade Palpatine to change his ways, using his own experiences of redemption and growth. However, Palpatine is a very stubborn and power - hungry character. So, it would likely result in a battle of wills. And depending on how the fanfiction is written, Naruto could either succeed in changing Palpatine or have to fight against him to protect the innocent in the Star Wars universe.
In this fanfiction, the story might start with Naruto being recruited by Palpatine in a very sneaky way. Palpatine might disguise his true intentions well. As Naruto begins to work, he starts to notice the negative impact of Palpatine's actions on the people. Naruto's strong moral compass kicks in, and he tries to find a way to stop Palpatine without causing too much chaos. He might try to use his charisma and the relationships he builds in the Star Wars universe to create a resistance against Palpatine. It could be a story of Naruto's struggle between his loyalty to his new employer (at first) and his sense of what is right and wrong.
He might be given special missions. For example, he could be tasked with training the new generation of ninjas. His experience and skills would be invaluable in this role.
It could be that a powerful wizard in the Harry Potter universe sends Harry to defeat Palpatine for some greater good. Harry's quick thinking and his array of spells like Expelliarmus or the Killing Curse (although he hates to use it) could potentially be used against Palpatine. Since Palpatine is used to dealing with lightsabers and the Force, Harry's magic could catch him off - guard.
He might try to change certain events. For example, he could prevent some of the tragedies that occurred in the original story. Maybe he would stop the Uchiha massacre by warning the clan or finding a way to resolve the conflict between the Uchiha and the village leadership.
Anakin might betray Palpatine to save someone he loves. If Palpatine threatened Padmé in some way, Anakin would surely turn against him. After all, Anakin's love for Padmé is one of his strongest driving forces.
In fanfiction, Naruto joining could lead to alternate storylines. Maybe he'd find himself in a modern - day setting instead of the Hidden Leaf Village. He could use his ninja skills in a completely different environment, like a big city, which would be really interesting to see how he adapts.
Well, in some fanfiction, Naruto could be in the hospital because of a new and strange illness that no one has seen before. The story could focus on the doctors in the ninja world trying to figure out a cure. And Naruto being Naruto, he might be cracking jokes with the nurses and other patients, spreading his positive energy even while sick.
Well, in the cave in Naruto fanfiction, there could be a secret training session. Naruto might discover a new jutsu there, hidden by an ancient ninja. It could also be a place where he meets a mysterious character who gives him some crucial advice for his future battles.
Maybe Naruto could be training on the beach, trying out new jutsu with the open space and the water as a challenge. For example, he might be working on a water - based jutsu that uses the ocean around him.
In a Naruto Hado 90 fanfiction, Naruto might find himself in a parallel universe where the ninja world is based on different energy systems, and Hado 90 is part of that system. He has to figure out how to use it while also dealing with the different politics and power struggles in this new world. For example, there could be a powerful clan that wants to monopolize the use of Hado 90, and Naruto has to stop them to protect the innocent. This would involve him making allies, learning the secrets of this new world, and of course, mastering Hado 90.