One consequence could be a rift in the family. Their relationship might be so strained that it affects the whole family dynamic, causing tension during family gatherings or events.
One consequence could be that he might face social isolation in certain situations. For example, in a party or gathering where alcohol is the main feature, Percy would be the odd one out, which could lead to him being excluded from certain social circles within the fanfiction.
One consequence could be a broken family relationship. Their interactions would be filled with tension and animosity. Family gatherings would become uncomfortable, and other family members might be forced to take sides.
One possible consequence is that it could lead to a split in their group. If they are part of a team or a community, their animosity could cause others to take sides, creating factions.
It could also lead to a divergence from the core values of the Naruto series. The series often emphasizes family, friendship, and love in a positive way. If Naruto hates his family in fanfiction, it goes against these values and may cause some fans to be disappointed.
One consequence could be that Percy becomes more rebellious. He might not follow the gods' orders as readily as before, which could lead to all kinds of chaos in the world of the story.
One consequence could be that he leaves the village. He might go off on his own to find a new place where he feels accepted and can start anew.
It could also lead to some division among the Naruto fandom. Those who support Sakura's view might be more critical of fanfiction, while those who love fanfiction might not like Sakura as much because of her stance. For example, in online Naruto communities, there could be debates and arguments about whether Sakura is right to hate fanfiction.
One consequence could be that Harry becomes more isolated. If he hates the Order, he may distance himself from them, which means he loses a group of potential allies. This could put him in a more vulnerable position in the wizarding world.
Harry might isolate himself. Since he hates his brother, he may avoid family gatherings or events where his brother is present. This could make him lonely in the long run and miss out on other family relationships too.
The hatred between them might also have an impact on the relationships they have with other gods. Other gods may be forced to try and mediate or choose sides as well. This can cause a shift in the power dynamics among the gods in the fanfiction world, creating new storylines and plot twists.