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.
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'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.
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.
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.
Their return would likely have a huge impact on Naruto. He would finally have the family he always longed for. He might become more confident and less of an outcast as having parents is a normal thing in Konoha. He could also learn more about his family's history and jutsu directly from them.
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.
The story could develop with Naruto's parents helping him face new threats. They could form a powerful family team. Minato's speed and strategic mind combined with Kushina's chakra chains and Naruto's Rasengan - based attacks would be a force to be reckoned with.
In this fanfiction, the reception could be mixed. On one hand, the older generation who remembered Minato and Kushina would be very glad to see them return. They were important figures in Konoha's history. But on the other hand, some of the younger shinobi who didn't know them might be a bit cautious at first. Still, once they learn about their heroic deeds, they would likely warm up to them.
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.