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.
It could also be due to some external influence. Maybe there's a villain or some dark force at play that makes his family believe Naruto is a danger because of his godlike state. So, out of a false sense of protecting the village or themselves, they choose to ignore him.
He might feel very sad and lonely at first. Naruto has always craved family love and acceptance, so being ignored by them would be a huge blow.
One possible plot could be that Naruto has a godlike power that scares his family. His family, being normal shinobi in comparison, might be intimidated by his power. They don't know how to approach him anymore. Naruto, on the other hand, longs for their acceptance and love like before. He tries to control his power around them, but they still shy away, causing Naruto a great deal of emotional pain.
In this kind of fanfiction, Naruto may also feel a great deal of sadness and confusion at first. However, as time goes on, he could use that pain as motivation. He might think that if his family won't recognize him, he'll make a name for himself in the ninja world in a way that they can't ignore. He could start taking on dangerous missions, not just for the village but also to show his family what they're missing out on.
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.
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.
Dark Naruto might become more rebellious. He could start to distance himself further from his family and focus on building his own power. Maybe he'll find allies outside of his family who understand and support him.
In such a scenario, Naruto might initially feel sad and confused. But being Naruto, he could try to prove himself. He would focus on his ninja training even more, aiming to show his family that he is worthy of their attention through his strength and achievements.
Naruto might initially feel sad and confused. He could try to prove himself to his friends by working hard on his ninja skills. For example, he might train extra hours to show his friends that he is worthy of their attention.
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.
Naruto could start off being really excited about his new godlike powers. But as his family ignores him, he might become more withdrawn. He'll question his self - worth. Then, he could decide to prove himself not just through his powers, but also through acts of kindness and self - sacrifice, like he always did, but now with a more determined edge.