Yes, there might be. The world of fanfiction is vast and diverse. There are many fans who like to combine different fictional universes, like mixing the Harry Potter series with elements from Naruto such as the Byakugan. You can search on various fanfiction websites to find such stories.
Her relationship with Naruto might change as she could now use the Byakugan to keep an eye on him better in dangerous situations. With Sasuke, she might be more confident in facing him if he ever turned against the village again. And with Hinata, they could become closer as Sakura would understand the power of the Byakugan and they could share experiences related to it.
One possible plot could be that Naruto discovers he has Byakugan abilities through some strange encounter. Maybe he meets an ancient sage who bestows this power on him. This new power would completely change his fighting style. He could start using the Byakugan's long - range vision and near - perfect perception of an opponent's moves in his battles. It would also create an interesting dynamic within his team, as they would have to adjust to Naruto's new abilities.
Well, a story could be that Sakura gets the Byakugan through some sort of experimental jutsu gone wrong (or right). She then has to learn how to control it. Maybe she starts seeing things she doesn't understand at first, like chakra flow in a whole new way. She could end up training with Hinata to better understand the Byakugan. And in battles, she combines her brute strength with the Byakugan - powered precision, making her an even more formidable opponent.
One way could be through some kind of special experiment or ritual. Maybe a scientist in the Hidden Leaf Village discovers a way to transfer the Byakugan's power to Naruto. Another possibility is that he could inherit it in a very unique way, like through a spiritual connection with a Hyuga ancestor.
Another option is Wattpad. While it has a wide range of content, it also may have the 'Harry Potter has the Byakugan' fanfiction. You should search for the key terms in the search bar. Keep in mind that the quality of fanfictions on Wattpad can vary widely, but you might get lucky and find a really great story that combines these two elements.
Well, there's 'Byakugan - Blessed Fem Harry'. In this fanfic, the author really plays up the idea of how the Byakugan changes fem Harry's perspective. She starts to view the wizarding world through the lens of her new ability. It has some really exciting scenes where she uses her Byakugan to track down hidden magical artifacts that are invisible to the naked eye. And it also delves into how the other characters react to her new - found power.
His relationship with Kakashi would also be affected. Kakashi would have to mentor Naruto in a different way. He would need to teach Naruto how to use the Byakugan effectively, which is different from what he's used to with Naruto's normal abilities. This could strengthen their bond as teacher - student, or it could create some friction if Naruto struggles to adapt to Kakashi's new teaching methods.
If Naruto had an implanted Byakugan, his combat abilities would change significantly. The Byakugan gives the user enhanced vision, allowing Naruto to see the chakra pathways in his opponents. This would make his Rasengan attacks more precise as he could target the weak points in an enemy's chakra system. Also, he could potentially use Byakugan - related jutsu like the Gentle Fist style, which would add a new dimension to his fighting style.
Maybe Kabuto. He was Orochimaru's right - hand man and had access to a lot of his knowledge and resources. He was also involved in various experiments. Given Naruto's importance in the Naruto world, Kabuto might see the potential in implanting a Byakugan in him. It could be part of a larger scheme to gain an advantage in the ongoing power struggles in the shinobi world.