Yes, there might be such a fanfiction. In the Naruto fandom, with its large and diverse range of fan - created works, various out - of - canon scenarios are explored. However, this goes against the original storyline where Hinata and Neji have a complex relationship that is more about growth, understanding, and family bonds rather than such a violent act.
In the Naruto universe, Naruto killing Neji would be a very dark and out - of - character turn. However, in fanfiction, it could be due to some dark influence like a powerful and evil genjutsu that overpowers Naruto's mind and makes him see Neji as an enemy. Maybe a villain has managed to manipulate Naruto's perception of reality to make him commit such an act.
On a larger scale, the balance of power in the ninja world could be affected. Neji was a strong and capable shinobi, and his absence could create opportunities for enemies to take advantage. Naruto's actions could also damage the reputation of Konoha as a whole. Other villages might view Konoha as unstable or dangerous if one of their most well - known shinobi can turn on his own comrades. This could lead to increased tensions and potential conflicts between the different ninja villages.
It's a very controversial plot. Neji is an important character in Naruto, and his relationship with Naruto is complex but not one of enmity to that extreme. In the original story, they are comrades. So a fanfic with such a plot goes against the general spirit of the Naruto world and would shock many fans.
One possible plot could be that Hinata is somehow mind - controlled. Maybe an enemy uses a powerful genjutsu on her that makes her see Neji as a threat to Naruto or to the village. Under this influence, she attacks and kills Neji, which then leads to a great deal of guilt and self - loathing for Hinata once she breaks free from the control.
One possible motive could be a dark or alternate universe take. Maybe in this fanfic's world, there is some sort of dark magic or mind control that forces Naruto to do it against his will.
Naruto and Neji's friendship in fanfiction often delves into their past traumas. Naruto understands Neji's pain of being in a rigid clan structure, and Neji realizes Naruto's loneliness from being an outcast as a child. This mutual understanding cements their friendship. They support each other in battles, with Naruto relying on Neji's strategic mind and Neji depending on Naruto's raw power and determination.
Their relationship could develop from initial distrust to mutual respect. Naruto might be the one to break the ice with his friendly and outgoing nature, while Neji would slowly open up as he sees Naruto's growth and determination.
Neji might gain a significant boost in power. Without the seal suppressing him, his chakra flow could become more natural and stronger. He could potentially unlock new abilities or improve his existing ones, like his Gentle Fist technique becoming even more potent.
In many fanfictions, Naruto might use his unique chakra, perhaps enhanced by his Uzumaki heritage or the Nine - Tails' power. His strong will and connection to his friends could also play a role, allowing him to find a way to break the seal through sheer determination and his belief in Neji's potential.