In the fanfiction, there could be a family curse or some sort of obligation that forces his family to keep their distance from Naruto. They might believe that by ignoring him, they are protecting him or the family as a whole. For instance, if there is a dark force targeting Naruto, they might think that acting as if they don't care will keep him safe from that threat.
One possible reason could be jealousy within the family. If Naruto is getting a lot of attention from others in the harem aspect, his family might feel jealous or threatened. They could then choose to ignore him as a way of expressing their discomfort.
One possible reason could be that Naruto has some special power or destiny that his family is afraid of. Maybe they think that being close to him will put them in danger. Another reason could be that there are some misunderstandings within the family. For example, Naruto might have been wrongly accused of something, and his family, without fully understanding the truth, starts to ignore him.
Another reason could be jealousy. If Dark Naruto has certain unique abilities or powers that set him apart from the rest of the family, they may be jealous and rather than embrace him, they choose to ignore him. This would be a rather petty reason, but in the complex world of fanfiction, it's a possibility.
One possible reason could be that his newfound 'godlike' powers make his family feel estranged. They might not understand his sudden transformation and the magnitude of his power, which creates a sense of fear or discomfort, leading them to ignore him.
Well, in fanfiction, his family might banish Naruto due to differences in ideology. Naruto could be advocating for a more inclusive and progressive approach within the family, which goes against the traditional and conservative values of his family. They may see his ideas as a threat to the family's long - established order. Also, if there is a prophecy or some sort of family superstition related to Naruto that they misinterpret, they might banish him to avoid what they think could be a disaster for the family.
One possible reason could be jealousy. Maybe some members of Team 7 are jealous of Naruto's natural talent that he doesn't even realize he has. Another reason might be a misunderstanding. Naruto is often brash and loud, and his teammates could misinterpret this as him being over - confident or show - offish, when in reality he's just trying to prove himself. Also, there could be a pre - existing bias. If some members of Team 7 come from more 'privileged' ninja families, they might look down on Naruto who was an outcast in the village for a long time.
As time goes on, Naruto could become angry. He might feel betrayed by his family's lack of attention. This anger could fuel his determination to become stronger on his own, without relying on his family. He may start to train harder and focus on achieving his own goals, using the rejection as motivation.
Maybe his parents are dealing with some internal conflicts or secrets. They could be involved in something dangerous or forbidden, and they think that by ignoring Naruto, they are keeping him safe from the consequences of their actions. It could also be that they are under some sort of spell or mind - control that makes them act as if they don't care about him.
It might be due to the fanbase loyalty. Fairy Tail fans are really into their own world and characters. They might not want to introduce Naruto elements as they feel it could disrupt the original charm of Fairy Tail. Also, the art styles are different. Naruto has a more traditional Japanese anime look, and Fairy Tail has its own style. This visual difference could be a reason for the lack of crossovers in fanfictions.
One possible reason could be jealousy. Maybe Naruto has been getting more attention from the village elders or teachers because of his potential. His friends, feeling left out or overshadowed, might start to ignore him out of envy.