One possible storyline could be that Naruto's parents' return brings a sense of closure to Naruto. His sister, perhaps, helps him adjust to this new family dynamic. They could all go on adventures together, with Naruto showing his family the village he loves so much. His sister might also have some unique abilities that add to their family's strength.
Naruto would probably be overjoyed at first. After all, he has always longed for his parents. But with the sister, it might be a bit more complicated. He might be a bit cautious, not sure how to interact with her at first. But eventually, he would welcome her into his life with open arms.
Well, one possible plot development could be that Naruto's parents and sister help him train even harder. His father, Minato, might teach him some new and powerful jutsu. His mother, Kushina, could provide emotional support and also share some Uzumaki clan secrets. And his sister could be a new friend and ally for Naruto in the village, perhaps even having some unique abilities of her own that they can use together in battles or to solve problems in the village.
Naruto's relationship with Sasuke could become more complex. With his family back, Naruto might have less time for Sasuke at first, which could make Sasuke feel jealous or left out. But on the other hand, Naruto's newfound family support could also make him more confident in reaching out to Sasuke. He could try to get Sasuke to see his family as a positive example of what he could have too if he let go of his revenge.
Emotionally, Naruto would have to deal with a whole new set of family relationships. He grew up without his parents, and now having them back would be a huge adjustment. He might struggle to fit into a 'normal' family dynamic, and there could be some friction as they all get to know each other again.
On a personal level, Naruto would finally get the family he always wanted. But it might also bring some confusion and adjustment issues. His parents would be from a different time, and they'd need to adapt to the new world Naruto lives in. For example, they might be shocked by the new technology and the changes in ninja warfare.
Well, in this kind of fanfiction, Naruto's parents' return would be a huge shock to everyone in Konoha. Minato could use his wisdom to guide the village in new ways. Kushina would be there to support Naruto and also might play a role in female ninja empowerment in the village. Naruto would no longer be the lonely orphan he once was. He could finally have a family life, go on family outings, and have family dinners. This would make him a more well - rounded person and a stronger ninja in the long run.
One possible reason could be a sense of betrayal. Maybe he discovers some long - hidden secrets about his family that make him feel they are not who he thought they were. For example, if he found out his parents had some kind of deal with the village elders that he disagreed with.
It could also be that Naruto has been influenced by some external force in the fanfiction. For instance, an enemy might have planted false memories or ideas in his head, making him believe that his parents and sister are bad. This false perception could then fuel his hatred.
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.