One possible plot could be that Naruto's family, perhaps due to some dark magic or a curse, completely forgets who he is. Naruto then has to struggle not only with his normal challenges in the ninja world but also with the heartbreak of being forgotten by his own family. He might try to find a way to reverse the situation while also facing enemies who take advantage of his family's memory loss.
Naruto may try to find out the reason why he is forgotten. He will start by reflecting on his own actions. Maybe he thinks he has done something wrong that made his family forget him. Then he will strive to correct it. At the same time, he might also seek help from his friends like Sasuke and Sakura, who always stand by him.
Maybe it's an evil organization that wants to isolate Naruto. By making his family forget him, they hope to break Naruto's spirit and prevent him from becoming a powerful force in the ninja world. So they target his family's memories as a way to get to him.
Maybe there was some kind of powerful jutsu or curse involved. It could be that an enemy cast a spell on Naruto's family, making them forget about him.
Well, Naruto is a really strong - willed character. So, at first he'd be really hurt. But then, he would probably try to figure out why his family has forgotten him. He might go on a journey to find answers, all the while dealing with the pain of this rejection. He could also be angry at his family for forgetting him so easily, especially considering all he's been through.
In the 'naruto forgotten by family fanfiction', perhaps there's some kind of curse or misunderstanding that makes his family forget him. Naruto would then have to struggle not only with the normal challenges in the ninja world but also with the emotional pain of being forgotten by those who should love him the most. He may try different ways to make them remember, like showing great feats of strength or kindness, and along the way, he could make new friends who become like his new family.
Obviously Naruto himself would be a main character as the story is about him being forgotten by his family. His parents, if they are alive in this fanfiction, could also be important characters. They are the ones who are forgetting him, so their actions and reasons for this forgetfulness would be crucial to the story. And perhaps his friends like Sasuke and Sakura could also play important roles. They might be the ones to support Naruto when his family fails to do so, and they could also help him in his quest to figure out what's wrong with his family.
One possible reason could be some kind of dark magic or jutsu that has affected his family's memories. Maybe an enemy cast a spell specifically to make his family forget about him to weaken him.
The plot might involve a curse. Naruto could be cursed by an ancient power. As a result, his friends' memories of him start to fade away. He might notice this when they stop responding to him as they used to. Naruto would be heartbroken but determined. He could search for the origin of the curse, facing many challenges along the way. And in the process, he might discover some long - lost secrets about his own family or the ninja world that are related to this curse.
Perhaps in this fanfiction, Naruto starts to have dreams about his parents where they seem distant and unrecognizable. This makes him search for answers, leading him on a journey where he uncovers secrets about his family that were long buried. As he digs deeper, he realizes that there were forces at work that made it seem like his parents forgot him, when in reality, it was a much more complex situation.