In some cases, the 'naruto master of the sharingan fanfiction' could be about Naruto using the Sharingan to uncover secrets about the Uchiha clan that were previously unknown. This could tie into the overarching Naruto story, such as revealing more about the history of the Uchiha massacre or the true nature of the Sharingan's origin. It may also bring new story arcs where Naruto has to deal with ancient threats that were once related to the Uchiha and their powerful eyes.
Other characters like Sakura might be involved as well. She could be curious about how Naruto got the Sharingan and how it changes his abilities. Characters from the Uchiha clan, even if they are just mentioned in flashbacks, could be important. For example, Itachi's actions and the secrets he held about the Sharingan could be explored more deeply in relation to Naruto now having this power. And then there are the villains. They might see Naruto with the Sharingan as a new and greater threat or as an opportunity to gain power for themselves.
A new character could be introduced as a Sharingan master. For example, a wandering ninja who has been secretly studying the Sharingan for years. He might have no allegiance to any village and travels around, looking for worthy pupils to inherit his knowledge. He could have unique techniques related to the Sharingan that no one has seen before.
One interesting storyline could be a young ninja who discovers they have an innate ability to master the Sharingan at an extraordinary rate. They might then face challenges from jealous rivals within their own village who fear their growing power. Another could be a Sharingan master who has lost their sight due to overuse of the Sharingan but discovers a new way to 'see' through chakra perception, leading to a whole new set of adventures.
Yes, in some fanfictions, Naruto can be depicted as having the Sharingan. Fanfiction writers often like to play with different character abilities and combinations, so it's not uncommon to see Naruto with the Sharingan in their creative works.
The Sharingan in such a fanfiction could be used as a tool for a Fairy Tail character to gain an edge in their battles. They might initially struggle to control it, but as they learn more about it, they become a formidable force. For instance, they could use the Sharingan's genjutsu abilities to deceive opponents in the Fairy Tail battles.
Sakura could be an unexpected character to have the Sharingan. It would completely change her character dynamics. She could use it to enhance her medical ninjutsu, seeing the internal body structure more clearly. Also, she could become a more formidable fighter, using Sharingan - based genjutsu to her advantage.
It could be Sasuke. In many Naruto - related stories, Sasuke has the Sharingan and is often the target of others' tricks or manipulations due to his complex personality and his power.
If Naruto had the Sharingan, his battle skills would change. Hinata would be both in awe and a bit worried about this new Naruto. Their relationship could develop through her trying to understand this new power of his. For example, she might offer to help him train to control the Sharingan's abilities, like the genjutsu. During these training sessions, they would grow closer and their relationship would take on a new dimension of mutual understanding and support.
In some fan theories, it could be due to a unique chakra interaction. Maybe the Kyuubi's powerful chakra somehow mutates Naruto's own ocular abilities and triggers the emergence of the Sharingan. But this is just a wild fanfiction idea.