The reaction of the Naruto fandom would be one of disgust and disappointment. Fans have grown to love Naruto for his kind heart, his loyalty, and his search for family and belonging. A fanfiction with such a dark and untrue plot would be seen as a perversion of the Naruto we all know. It would go against the community's shared understanding of the character and the values the series represents. Some fans might even try to discourage the spread of such a fanfiction to protect the integrity of the Naruto fandom.
This is a very disturbing and untrue concept to the original Naruto story. Naruto is a character who values family and friendship deeply. In the real Naruto series, his family was taken from him in cruel ways (like his parents' sacrifice), and he would never do such a heinous act. So, no, there should not be any legitimate fanfiction following this plot as it goes against the very essence of Naruto's character.
Most of the fandom would probably be horrified. Naruto is known for his positive values, and killing a family member is completely against that. There would likely be a lot of criticism towards the author of such a fanfic.
It can create a divide within the fandom. There are those who enjoy fanfiction and see it as a creative extension of the Naruto world, and then there are those who hate it. This can lead to arguments and a bit of a rift between different groups of fans.
There would be mixed reactions. Some fans might be outraged as it goes against the established relationships in the original story. They might feel it's disrespectful to the characters' development. Others might be more open - minded and see it as an interesting creative take, a different exploration of the characters' potential relationships.
It can be quite divisive. Some fans might be extremely offended as Naruto is a beloved character known for his positive traits. This type of fanfiction goes against the established character arc and values. It could make some fans angry that someone would distort Naruto's character in such a way.
He might be really surprised. Some fanfictions could show him in situations he never thought of, like different kinds of friendships or battles. He'd probably be curious about how fans see him and his world.
A possible reason could be jealousy. If Naruto had a sibling who was always favored by their parents, he might grow to hate his family. He would feel like he was always in the shadow of his sibling and that his family didn't care about him as much.
Well, he could either find it hilarious or a bit offensive, depending on what the fanfiction is about. If it's a comical take on his story, he might laugh his head off. But if it distorts his relationships or his character in a negative way, he might not be too happy. For example, if someone writes a fanfic where he's a coward, which is completely against his real personality, he would likely be annoyed.
He might be really surprised. Some fanfictions could have really out - of - the - box ideas that he'd never thought of. For example, if there's a fanfiction about him having a different kind of training with a new teacher, he'd be like 'Whoa, that's a new take on things.'
One possible reason could be that he discovers some long - hidden family secrets that make him feel betrayed. For example, if he finds out that his family was involved in something unethical in the past. Another reason might be that he feels constantly overshadowed by his family's legacy and can't form his own identity within the family, so he decides to leave to find himself.