He would gain new visual abilities. Naruto could now use the Sharingan's powers like predicting movements, copying jutsus more easily. But it might also come with some drawbacks. For example, the Sharingan consumes a lot of chakra, so Naruto would have to manage his energy better.
In the fanfiction, if Naruto gets the Sharingan from Mikoto, it would completely transform his fighting style. He is used to his own unique way of combat, relying on his shadow clones and massive chakra reserves. But with the Sharingan, he would need to incorporate the Uchiha's more precise and vision - based techniques. This could make him a more versatile fighter, but also a target for those who fear the power of the Sharingan. Additionally, it could potentially affect his mental state as the Sharingan is known to carry some of the Uchiha's emotional baggage.
Naruto getting the Sharingan from Mikoto would likely change his relationships. His friends might be both amazed and a bit wary. The ninja world would also view him differently. Some might see him as a threat now that he has the power of the Uchiha. Also, he would have to train hard to master the Sharingan's different levels, like the Mangekyou Sharingan if it was transferred in its full potential.
In a fanfiction, if Naruto gets Shisui's Sharingan, he might face consequences in his training. He would need to learn how to control and master this new power, which could take time away from his normal training. This could potentially slow down his progress in other areas, like his Rasengan training or his control over the Nine - Tails' chakra. Also, his relationships with his non - Uchiha friends might be affected. They could feel left out or less important to Naruto now that he has this powerful Uchiha ability.
One way this could occur in the fanfiction is if there was some sort of genetic manipulation. Maybe a rogue ninja or a mad scientist found a way to combine Uchiha genes with Naruto's. Mikoto, being an Uchiha, had the Sharingan, and through this unethical genetic process, Naruto ended up with the Sharingan. This would also open up a whole new set of abilities and challenges for Naruto as he has to learn to control this new power which is very different from his normal chakra - based powers.
He might have increased visual abilities. For example, he could see chakra flow more clearly, which would be a great advantage in battle.
One consequence could be a change in the relationship between the Uchiha clan and Naruto. Mikoto would be extremely grateful, and this could lead to the Uchiha seeing Naruto in a more positive light. It might also make Itachi reevaluate his actions and motives, as Naruto's interference could disrupt his plans.
In fanfiction, if Naruto got the Sharingan from Madara, it would completely change his power dynamic. He would gain the abilities of the Sharingan like enhanced perception, the ability to copy jutsu more easily, and perhaps even access to some of Madara's unique Sharingan - based techniques. This would make him an even more formidable opponent and could potentially change the entire plot of the Naruto universe within the fanfiction world.
Mikoto could be developed as a more powerful figure. Since she has the Sharingan, she could be shown exploring and mastering abilities that were not fully explored in the original series. For example, she might discover a new type of genjutsu unique to her Sharingan that she then uses to protect the Uchiha clan.
In this fanfiction, Naruto would become extremely powerful. With the Sharingan, he could gain abilities like predicting movements and copying jutsus more effectively. The Rinnegan would give him powers such as the Six Paths techniques. He might be able to use these newfound powers to better protect Konoha and face stronger enemies.
The Sharingan might also give Naruto the ability to enter people's minds, at least to some extent. In the Naruto universe, the Sharingan has been shown to have some mind - related abilities. Naruto could use this to communicate with his friends in a more direct way, or perhaps even to break through genjutsu more easily. And, if he can enter the minds of his enemies, he could gather valuable information about their plans and weaknesses.
Naruto would gain the ability to copy jutsu. With the Sharingan, he could watch an opponent's movements closely and replicate their techniques. This would be a huge advantage for him in battles.
The consequences could be far - reaching in the fanfiction. Naruto's relationship with Kakashi might change. There could be a deeper sense of respect and a new kind of bond formed because of this transfer. In terms of power, Naruto could unlock new jutsus or abilities that are related to the Sharingan. He might be able to combine his existing Rasengan techniques with the Sharingan - enhanced perception. This could make him an even more formidable opponent. However, it could also put a strain on his body. The Sharingan is known to consume a lot of chakra, and Naruto's body might need to adapt to this new power drain. If he overuses it, it could lead to exhaustion or even long - term damage.