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.
Some of the more hot - headed ANBU members might overreact and assume Naruto is a threat to the village. They could try to use force to get the stolen item back. However, the more level - headed ones might try to figure out Naruto's motives first. They might consider that Naruto could have a good reason for what he did, like if he thought the item was being misused by the ANBU.
He may be surprised. Fanfictions can have some really out - there ideas that he might not have considered before. For instance, a fanfiction might have Naruto suddenly having a new, super - powerful jutsu that was never seen in the original series.
Iruka would probably be very welcoming. He has always been kind - hearted towards Naruto, and seeing Harry as Naruto's sister, he would likely extend the same warmth. He might be a bit confused at first about her strange abilities (if she still has some magic), but would soon accept her. Kakashi, on the other hand, would be more cautious. He would be observing Harry to see how she could impact Naruto and the village. As for Sasuke, he might initially be indifferent, but as he sees how Harry helps Naruto, he might start to respect her more.
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.
Minato and Kushina would likely have a complex reaction. They would be proud of Naruto's heroic deeds in fanfiction. But if they saw him being in danger or having a hard time, they would be worried. Also, if there are parts where Naruto's values seem different from what they taught him, they might be a bit confused.
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.
Sasuke would be deeply affected. He and Naruto had a complex relationship, from being rivals to friends. He would likely feel a sense of guilt, as if he should have been there to protect Naruto. Sakura would be heartbroken. She had always cared for Naruto, and seeing him die in such a tragic way in front of his parents would make her feel helpless. His parents, on the other hand, would be in utter despair. His father might feel like he failed as a father again, not being able to protect his son this time either.
Naruto would probably be initially cautious but also curious. He has a knack for seeing the good in people, so he might try to befriend the Akatsuki sister. Kurenai, on the other hand, would be more guarded. She is a more experienced ninja and would be wary of any Akatsuki member. But she also might see an opportunity to gain intel from the sister.
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.