In some fanfictions, the Sharingan is used to explore the history of the Uchiha clan from a different perspective. For instance, a story could focus on a young Uchiha who is born with a defect in their Sharingan. Through their journey, they discover secrets about the origin of the Sharingan that were long forgotten by the clan, and this knowledge could potentially change the future of the Uchiha and the entire ninja world.
One plot idea could be a character who is an experiment and has only one Sharingan eye implanted. They struggle to control its power and are hunted by those who want to use their unique situation. For example, they might have to constantly fight off rogue ninjas who think they can steal the eye's power.
One interesting plot twist could be that Naruto's Sharingan was a result of some ancient prophecy or hidden experiment. This would make him an even greater target for villains. Another could be that his Sharingan has a unique ability different from other Uchiha's, like being able to see the true intentions of people. This would change how he interacts with everyone in the ninja world.
One plot idea could be a character who was born with only one Sharingan eye and has to struggle to master its powers in a world where most Uchiha have two. They might face discrimination from their clan for being different. Another idea is that a character loses one of their eyes in a battle and then has to adapt to having just one Sharingan, with different abilities emerging as a result of this change. For example, the single Sharingan could have enhanced perception abilities to make up for the lack of a second eye.
One interesting story could be about a character who has a unique combination of the blue chakra and the Sharingan's powers. Maybe they use it to see through illusions that are even stronger than normal. They could go on a journey to discover the origin of this strange power combination.
There might be a fanfiction where a ninja from a different village discovers the Mata Sharingan and tries to use it to bring peace between warring factions. They could face many challenges as others might see their new power as a threat.
One interesting story could be about a character with a unique form of the Sharingan that has a gray tint and their journey to master its special abilities. Maybe they use it to see through illusions that are different from the normal Sharingan illusions.
One interesting 'Naruto Black Sharingan Fanfiction' could be about a character who gains the Black Sharingan in an unexpected way, like through a mysterious ancient ritual. This new power then leads them on a journey to uncover secrets of the Uchiha clan that were long forgotten.
In some fanfictions, a character from another dimension enters the Naruto world with the Rinne Sharingan. This new character's power throws the balance of the Naruto world off. The story could revolve around Naruto and his friends trying to understand this new power and either make an ally of the character or defeat them to restore peace in their world.
In some 'eye naruto fanfiction', the focus could be on Naruto getting an eye transplant. Let's say he gets an Uchiha eye in a very unusual way. This would cause a stir in the ninja villages. He would have to deal with the new powers and the potential side effects. At the same time, he would have to face the political implications as some might see him as a threat now that he has an Uchiha's power. He would need to learn how to control the Sharingan's abilities such as the genjutsu and the ability to copy jutsus quickly.
He might gain enhanced perception abilities, which would be a huge boost to his combat skills. With the Sharingan, he could predict his opponents' moves more accurately.