Well, perhaps in the fanfiction world, Naruto's parents discover some kind of 'dark power' within him that they fear might be uncontrollable. They think that banishing him is the only way to keep the village safe from this potential threat. This could be a power that is different from the Nine - Tails' chakra and seems extremely dangerous to them.
Naruto would likely become more independent. Without the support of his parents, he has to fend for himself. He might develop a tougher exterior and be more cautious about trusting others. For example, he may not be as open - hearted as he was in the original story, always having the fear of being betrayed again in the back of his mind.
In the 'Banished Naruto's Parents Revealed Fanfiction', his parents could be presented as having been part of a group that was at odds with the village leadership. Maybe they were trying to bring about some kind of change that the elders didn't like. So, when Naruto was born, they were seen as a threat, and Naruto was made to suffer as a result. This would be a departure from the more heroic and straightforward view of them in the original series.
One possible reason could be that Naruto discovers some dark family secret that his parents want to keep hidden. For example, if there was a connection between the Uzumaki clan and some forbidden jutsu, and they fear Naruto might be exploited because of it. So they banish him to protect the clan's reputation and his own safety.
In many fanfictions, some might reveal that Naruto's parents had a more complex backstory than in the original series. Maybe they were part of a secret organization or had a special mission that led to Naruto's situation. However, without specific details about the particular fanfiction, it's hard to be more precise.
He might become more independent. Without the protection of his parents, he has to fend for himself. So he could learn survival skills faster and become stronger in combat.
Well, it could be really interesting. If Naruto is banished and his parents return, they would be furious about his banishment. His mother, Kushina, would probably be very protective. They might bring Naruto to a new place and start a new life, away from the village that banished him. Or, they could fight to change the village's view and make it a better place for Naruto.
In this 'godlike Naruto banished by parents' fanfiction, the plot might start with Naruto showing extraordinary abilities that are far beyond what his parents expected. They banish him out of fear for the balance of the ninja world. Naruto, being banished, might go into hiding in a far - off land. There, he could train even more rigorously to master his powers. He may also encounter other outcasts who have their own stories. Eventually, he might decide to return to his village to either seek revenge or to show his parents that he can use his powers for good.
One possible plotline could be that Naruto is banished due to false accusations of endangering the village, despite his parents being alive. His parents, Minato and Kushina, might be powerless to stop the decision because of some political intrigue within the village. Naruto then has to find his own way in the outside world, facing new enemies and making unexpected allies.
Naruto's character could develop in many ways. Firstly, he would be less impulsive as he has his parents to guide him. He might also become more understanding of the village's politics since his parents could explain things to him. His self - esteem would improve, and he would be more at ease with his status as a jinchuriki. His relationships with others in the village would also change, as people would see him in a new light with his parents' support.