One plot could involve a young Jedi who, after being exiled, discovers a strange energy signature on a remote planet. It turns out to be a portal to Naruto's world. There, he encounters ninjas with Sharingan and learns their ways. He then brings this knowledge back to the Star Wars universe and tries to use it to reform the Jedi Order. He teaches his fellow Jedi how to use the Sharingan - like focus and perception in their training and in battles against the Sith.
One plot idea could be that the Star Wars Empire discovers the Naruto world and wants to harness the power of chakra for their own military use. They start by capturing ninjas and trying to study their chakra. Another idea is that a Naruto character, say Naruto himself, somehow gets transported to the Star Wars universe and has to learn the ways of the Force while also trying to find a way back home. He could end up getting involved in the fight between the Rebels and the Empire.
Here's another plot. In the fanfiction, a group of Sith Lords discovers the Naruto world and decides to use the powerful ninja there for their own evil purposes. A senator in the Star Wars universe, who has some knowledge of the Naruto world, tries to stop them. He teams up with some of the Naruto characters, like Naruto himself or Kakashi. Together, they embark on a journey across both universes to defeat the Sith Lords and protect both the Star Wars galaxy and the Naruto world from destruction.
Well, perhaps there could be a story where a character with Sharingan - like abilities (similar to Sasuke in Naruto) in the Star Wars universe is a Jedi. He is betrayed by his master who turns out to be a Sith in hiding. The master wants to take the young Jedi's unique powers for himself. In a different scenario, a group of Naruto characters are on a mission in the Star Wars world and one of them is bribed by the Trade Federation to betray the rest. This could lead to a series of battles and the Naruto characters having to find a way to overcome the betrayal and the new threats they face.
One idea could be Naruto and Hinata as Jedi knights. They could go on a mission to save a planet from the Sith. Naruto's strong willpower and Hinata's gentle yet firm nature would make them great Jedi. Another plot could involve them being part of a resistance against the Galactic Empire, using their unique ninja skills in a Star Wars setting.
A plot idea could be that the Sith Lord somehow discovers the power of chakra and tries to use it to create an ultimate weapon. Naruto and his friends, along with the Star Wars Rebellion, have to stop him. They travel across different planets and Hidden Villages to gather knowledge and allies.
One idea could be that the character with the Sharingan is banished due to false accusations of using its power for evil. He then has to journey alone, facing challenges and learning to control his power in new ways. Maybe he meets a group of outcasts who he befriends and together they fight against the unjust system that banished him.
One idea could be a character from RWBY obtaining the Sharingan and using its abilities in combat. For example, Ruby could get the Sharingan and combine its precognitive abilities with her own speed, making her an even more formidable fighter.
One idea could be exploring a different origin for the Mangekyou Sharingan. For example, what if it was related to an ancient Uchiha pact with a hidden spirit? Another could be a story where a non - Uchiha character somehow gains the ability to use the Mangekyou Sharingan and has to deal with the consequences. Or perhaps a fanfiction where the Mangekyou Sharingan has additional powers that are not shown in the original Naruto series, like the ability to time - travel.
One idea could be a story where the main character, who has the Eternal Sharingan, has to face a new and powerful enemy that can manipulate time. With the power of the Eternal Sharingan, the character has to find a way to break the enemy's time - based attacks and defenses. Another plot could revolve around a character with the Eternal Sharingan trying to uncover long - lost secrets of the Uchiha clan that are hidden deep within the Sharingan's powers. Maybe there are ancient jutsu or prophecies that only the Eternal Sharingan can unlock.
One idea could be a story where Naruto somehow gains the Golden Sharingan. He could use its unique powers to see through genjutsu more easily and also have enhanced perception in battle. For example, he might be able to predict his opponents' moves better. Another plot could involve Naruto using the Golden Sharingan to unlock a new form of his Rasengan, perhaps one with the ability to disrupt an enemy's chakra flow on a deeper level. Or, it could be a story where Naruto has to team up with a character who has knowledge of the Sharingan to fully understand and control the Golden Sharingan's powers.