Sometimes it could be due to a misunderstanding. A game character might be on a quest that the family doesn't understand. For instance, the character might be trying to prevent a greater evil but has to use methods that seem unethical to the family. Without proper communication, the family could misinterpret the character's actions and come to hate them. Also, if the character is born with a 'curse' or some special ability that the family fears, they may be ostracized and hated by the family.
One example could be Kratos from the God of War series. In the early games, his actions in his past, filled with rage and violence, made him an outcast even among his own family. His Spartan ways and the brutal deeds he committed, like killing his own father Zeus in a fit of vengeance, led to a strained relationship with his family. His son Atreus initially had a lot of mixed feelings towards him, being both in awe and a bit afraid of his father's past.
Well, perhaps in this fanfic, Naruto's family has a different set of values compared to Naruto. His determination to become Hokage and his unwavering belief in himself might be seen as over - ambitious or self - centered by his family. His family, who might prefer a more low - key and traditional lifestyle, could start to hate him because they think he is disrupting the family's harmony and going against their long - established ways.
Another reason might be related to family politics. In some complex family structures in the Naruto universe, there could be different factions. Naruto might be on the wrong side of the power struggle within the family. His views or actions could be seen as a threat to the traditional power structure of the family, so they hate him.
In some fanfictions, Naruto might be hated by his friends due to a misunderstanding. For example, if there's a false rumor spread about him being a traitor. Another reason could be his sudden increase in power that makes his friends jealous. Maybe he accidentally harms one of them during a training session and they hold a grudge.
One possible reason could be a very different and perhaps unappealing take on Naruto's character in that fanfiction. Maybe the author made him overly cruel or out of character in ways that fans who love the original Naruto can't stand.
It could be a misunderstanding. Perhaps Naruto was involved in an incident where his actions were misinterpreted by his brother. For example, Naruto might have accidentally caused harm to someone his brother cared about while trying to do something good, and his brother didn't get the full story and started to hate him as a result.
He might try to prove himself. Naruto has always been a determined character. So he would likely strive to show his family that they are wrong about him. He could do this by achieving great things in the ninja world, like mastering new jutsus or completing difficult missions.
It might be that the game character has a history of betraying teammates or taking all the rewards for themselves. Also, they could have a look or style that people just don't like.
One reason could be his power. His connection to the Nine - Tails makes him extremely powerful. In fanfiction, some in Konoha might fear this power and thus hate him. Another reason could be jealousy. Naruto becomes very popular and respected in the original story. But in fanfiction, some characters might be jealous of his achievements and turn that into hatred.
One possible reason could be a false accusation. Maybe someone spread a rumor that Naruto was involved in a heinous act, and without proper investigation, everyone turned against him.