One idea could be a story where a character has both the Byakugan and Sharingan abilities due to some unique genetic experiment. This character could struggle with the dual powers, as the Byakugan's long - range vision and chakra point detection clashes with the Sharingan's ability to copy jutsu and predict movements. Another plot could involve a war where the knowledge of both the Byakugan and Sharingan is crucial for victory, and a young ninja must master both to save his village.
Perhaps a story where a new type of ninja art is created by combining the powers of the Byakugan and Sharingan. A young prodigy discovers that by using the Byakugan's detailed vision to focus on the chakra flow, and then using the Sharingan to manipulate that flow, they can create a whole new set of jutsu. This could lead to a power struggle within the ninja world, as different villages either want to steal this knowledge or protect it. And this character would have to face many challenges, both from those who envy their power and those who fear it.
Well, a cool plot might be a ninja who was born blind but through some strange ninja magic or ancient ritual, gains both the Byakugan and Sharingan. This would be really interesting as he has to learn how to 'see' in a completely different way than normal ninjas. He could use the Byakugan to sense the world around him and then use the Sharingan to analyze and react to threats. Also, a story about a Sharingan user trying to steal the secrets of the Byakugan and how the Hyuga clan defends it could be great.
Another plot could involve a forbidden jutsu that combines the powers of these three ocular abilities. Maybe a hidden scroll is discovered that details how to perform this jutsu, but it comes with a great cost. The main character has to decide whether to pursue this power despite the risks, which could lead to internal conflict as well as conflict with other characters who oppose this dangerous path.
A fanfiction could be set in an alternate universe where the Sharingan and Byakugan have different powers than in the original Naruto series. For example, the Sharingan could be used to directly communicate with the spirits of the dead, and the Byakugan could see into different dimensions. A young ninja discovers these new abilities and has to use them to save his village from a mysterious threat.
A plot could be that a rogue ninja steals the secrets of both the Sharingan and Byakugan and tries to create an army of super - ninjas with artificial versions of these eyes. The main characters then have to track him down and stop him before it's too late.
A possible plot could be that Naruto is given a temporary Sharingan by an ancient Uchiha spirit. With this Sharingan, he starts to see the world in a different way, and he realizes that there are hidden threats in the ninja world that only the Sharingan can detect. He then embarks on a journey to find out more about these threats and how to stop them. Another plot could be that Naruto meets an Uchiha survivor who teaches him how to use the Sharingan in a way that no one else has thought of. This new way of using the Sharingan could help Naruto in his fight against the Akatsuki. And there could also be a plot where Naruto's Sharingan evolves in a unique way because of his Uzumaki heritage.
One possible fanfiction could be about a character who has the unique ability to combine the powers of the Sharingan, Rinnegan, and Byakugan. For example, this character might be a long - lost descendant of powerful ninja clans. They could use the Sharingan's precognitive abilities to anticipate an enemy's moves, the Rinnegan's power over life and death in battles, and the Byakugan's long - range vision to scout out the battlefield. This would make them an extremely formidable foe in the Naruto universe.
Another plot could be that the Sharingan is given to Naruto as a last - ditch effort to save the village. A dying Uchiha gives Naruto his Sharingan, and Naruto has to figure out how to incorporate it into his already powerful set of skills. He might have to deal with the jealousy or suspicion of some of his comrades who are wary of the Sharingan's power.
One plot idea could be that Naruto is on a mission and stumbles upon an ancient Uchiha artifact that somehow bestows the Sharingan upon him. He then has to quickly learn to control it while his friends are both amazed and a bit wary. Another could be that during a battle with an unknown enemy who has the power to transfer abilities, Naruto ends up with the Sharingan. This leads to him exploring the new abilities in unique ways, like combining Rasengan with Sharingan - enhanced perception.
Perhaps a story where Mikoto's Sharingan has a prophecy locked within it. Naruto, with his unwavering belief in changing destinies, helps Mikoto unlock this prophecy. It could be about a future that is both a threat and an opportunity for the ninja villages. Together, they have to figure out how to either prevent or embrace this future.
A concept could be a reincarnation story. A character is the reincarnation of ancient ninja who once mastered all three eyes. They start to have strange dreams and visions related to the powers of the Sharingan, Byakugan and Rinnegan. As they explore these, they gradually unlock the hidden potential within them. This would involve a lot of mystery and self - exploration in the story.
One possible fanfiction could be about a character who has the unique ability to combine the powers of the Sharingan, Byakugan and Rinnegan. For example, they might use the Sharingan's precognitive abilities, the Byakugan's long - range vision and the Rinnegan's power over life and death to fight off a powerful new enemy that the regular ninja in the Naruto universe can't handle. This would create a really interesting story full of action and strategic battles.