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.
One reason could be that Naruto has been through a lot of hardships related to his family in the fanfic. Maybe they didn't support his growth to this godlike state, or they tried to use his power for their own gain. For example, if his family had always been jealous of his potential and when he finally reached this ultimate power, he realized their true nature and decided to cut ties.
His father, Minato, could be a likely candidate in a really dark fanfiction. Maybe he was resurrected in an imperfect way and his mind was warped, causing him to turn on Naruto.
Perhaps his family consists of a group of fellow banished ninjas who become his surrogate family. There could be a strong - willed female ninja who becomes his partner, and together they have a child. And also an old sage - like figure who acts as the family's wise elder, guiding them through the difficulties of living in exile.
It could also be due to some family curse or prophecy. In the Naruto universe, there are often strange powers and curses. Maybe there was a prophecy that said Naruto's family had to keep their distance from him to protect him from some greater evil. So, they chose to neglect him in order to keep him safe, even if it was a difficult choice.
A Naruto - Tsunade family could also be unique in terms of their family traditions. Since Naruto loves ramen, perhaps it becomes a family tradition to have ramen every Sunday. Tsunade, on the other hand, might start a family tradition of annual medical ninjutsu competitions. Their family would be a symbol of unity in the village, with Naruto as the Hokage and Tsunade as his respected partner, and their children would grow up with a strong sense of duty and love for the village.
The 'sakura naruto sasuke are a family fanfic' would likely depict a family full of action and adventure. Since Naruto and Sasuke are both powerful ninjas, their family would be constantly involved in protecting the village. Sakura, with her medical skills, would be crucial in taking care of the family's health. They would teach their children the values of loyalty, hard work, and friendship. Their family story could also show how they overcome past differences. For example, Naruto and Sasuke's past rivalries could be used as lessons for their children on how to resolve conflicts in a healthy way.
One possible reason could be jealousy. Maybe Naruto has some special abilities or a prophecy surrounding him that makes his family members, who might be less favored, jealous. For example, if there's a prophecy that Naruto will be the most powerful ninja in the village, his siblings or parents might envy that future for him and start to hate him out of their own insecurities.
Naruto could try to communicate. He could sit down with his family members and try to understand why they hate him and also explain his side of the story.
One interesting storyline could be about Naruto and Hinata's children growing up and facing unique challenges in the ninja world. For example, their son might struggle with living up to his father's legacy while also trying to carve out his own identity. Another could be a fanfic that focuses on Hinata's role as a mother, showing how she imparts her gentle yet strong values to their children. And there could also be a story where the family has to deal with a new threat to the Hidden Leaf Village together, with each member using their own skills and abilities.