One possible thing that could happen is Naruto would gain new visual abilities. With the Sharingan, he might be able to copy jutsus even more effectively than before. The Sharingan could also potentially enhance his perception of his opponents' moves, making him an even more formidable fighter in battle. This could change the power dynamics in the Naruto universe significantly.
Well, when Madara gives Naruto his Sharingan in the fanfiction, Naruto's character development would take a very interesting turn. He has always been about his own unique brand of ninja way, which is based on hard work, friendship, and never giving up. With the Sharingan, he'd have to balance this new power with his existing values. He might face temptations to use the Sharingan for shortcuts or for revenge if he ever faced enemies related to the Uchiha's past. However, I think Naruto would ultimately use it in a way that aligns with his positive nature, perhaps to protect his friends and the village even better. But the internal struggle and the growth he'd experience while learning to control and use the Sharingan would be a significant part of his character development.
Well, in this fanfiction, Madara could give Naruto the Sharingan as a way to balance the power in the ninja world. Naruto then uses the Sharingan's ability to predict movements in combat. This gives him an edge against enemies who are used to his regular fighting style. He might also discover some hidden abilities of the Sharingan that no one else knew. For example, it could have a unique connection to his Nine - Tails chakra, creating a whole new set of jutsus.
Naruto's character would experience a significant shift. He has always been known for his raw power and determination. With the Sharingan, he would gain a new level of perception. This could make him more cautious in battle as he now has the ability to see things in more detail. Emotionally, he might become more reserved as he tries to understand the Uchiha's history and the significance of the Sharingan. His growth would not only be in terms of power but also in his understanding of different ninja clans. He would strive to use the Sharingan in a way that unites the ninja world rather than divides it, showing his growth as a character who values peace and unity above all else.
One possible fanfiction could be about a young ninja who discovers he has a special connection to Madara's Sharingan. Maybe he inherits some of Madara's latent powers through a mysterious family link. This could lead to him being hunted by those who want to use his power for evil or by those who fear it.
One plot implication could be that Naruto becomes an outcast among some in the village who fear the power of the Sharingan. This would create internal conflict within Konoha. Another is that Naruto might be targeted by enemies who want to either steal the Sharingan or kill him to prevent him from becoming too powerful. Also, it could change his relationship with Sasuke, as they both now share a connection to the Sharingan.
The plot implications could be huge. It could create a new dynamic between Naruto and the Uchiha clan. Naruto would have a part of Uchiha heritage, which might make some Uchiha more accepting of him. Also, it could lead to new alliances as other villages might see Naruto as an even greater threat or an even more valuable ally. And in terms of character development, Naruto would have to deal with the new power and the potential darkness that comes with the Sharingan.
In some fanfictions, it could be through a divine intervention by Kami. Maybe Kami sees Naruto's pure heart and his need for more power to protect the village. So, Kami decides to bestow upon Naruto the power of Madara's Sharingan as a way to give him an edge in battles against powerful foes.
One possible consequence is that Naruto would gain enhanced visual abilities. The Sharingan can see chakra flow clearly, which would be a great asset in battle for Naruto. He could better analyze his opponents' moves and weaknesses.
With his other friends like Choji and Kiba, they might see Naruto as even more of a leader. The Sharingan is a symbol of great power, and Naruto obtaining it could inspire them to train harder. However, they might also feel a bit of a distance at first, as Naruto now has a power that is quite different from what they have. But overall, Naruto's positive nature would likely help him maintain strong relationships with his friends as he'd assure them that he'll use the power for good.