It could be someone like Rock Lee. He was a hard - working prodigy in taijutsu, but often got overshadowed by the more flashy abilities of others. Maybe in this fanfiction, he's completely forgotten until he does something extraordinary to get noticed again.
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.
If the fanfic had a very niche concept or a plot that was a bit too different from the mainstream Naruto stories, it could have been forgotten. For example, if it focused on a minor character in a really unique way that not many people were interested in at the time. Also, if the website where it was hosted had some issues, like shutting down or losing data, that could contribute to it being forgotten.
Another reason could be that the author stopped promoting it or abandoned it. If the author didn't keep up with the Naruto fandom's trends or didn't engage with readers, it could have faded into obscurity. For example, if a fanfiction had a very niche plot that didn't appeal to a wide audience at the time, it might have been quickly forgotten as more mainstream - appealing fanfictions emerged.
It could be a new character created by the author. Maybe someone who was born in a small, overlooked part of the village and has a power that is related to the prophecy but has been dormant until now.
Initially, Naruto would be in shock. He'd try to talk to his friends like Sasuke or Sakura, but when they look at him with blank stares, it would break his heart. He would feel like an outsider in his own village. But then, his ninja spirit would kick in. He would start investigating. He might think it has something to do with a new enemy or some hidden plot. He'd be on a mission to not only get his friends and family to remember him but also to protect the village from whatever threat caused this forgetting in the first place.
He would likely feel extreme loneliness. Naruto has always valued his friends, so being forgotten by them would be like losing a part of himself. He might start to doubt his self - worth, thinking that if his friends could forget him so easily, then maybe he wasn't as important as he thought.
Well, it could mean a fan - written story about Naruto where the main character Naruto is somehow forgotten in the plot. Maybe in this fanfiction, the people in Naruto's world forget who he is, his deeds, and his importance.
Well, it could be about a character in Naruto who was once a prodigy but has been forgotten. Maybe it's a story that explores their journey to regain their former glory or perhaps it's about the reasons they were forgotten in the first place.
It could be about a son of Naruto who has been somehow forgotten in the Naruto universe. Maybe he was lost during a battle or some kind of incident that made everyone forget his existence. The fanfiction would then likely explore his journey to be recognized again or his own adventures while being in this forgotten state.