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.
Maybe Naruto's parents' return with his sister would lead to a shift in the power dynamics in the village. The villagers, who once shunned Naruto, might now see him in a new light because of his family. His sister could be a bridge between Naruto and the other kids in the village, helping him make more friends. And Naruto's parents could start working towards making the village a more inclusive and accepting place for everyone, especially those with a difficult past like Naruto.
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.
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.
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.
It could also be that the sister, in an attempt to help Naruto, gets involved with some dangerous characters or situations. Maybe she tries to find someone powerful to plead Naruto's case, but that person has some ulterior motives. This would add a lot of twists and turns to the story, as Naruto then has to not only deal with his own problems but also save his sister from the trouble she has gotten into while trying to help him.
Another aspect could be the relationship between Naruto and his sister. If she is the favored one, she might initially be oblivious to Naruto's pain. But as the story progresses, she could realize how wrong it is and try to make it up to him. This could lead to a complex family dynamic exploration in the fanfiction.
One possible plot development could be that Serena's sister initially doesn't notice Darien's feelings. She might be focused on her own life, like her career or studies. Then, Darien starts doing small things to get her attention, like leaving her favorite flowers at her workplace or sending her anonymous sweet notes. As she starts to suspect it's Darien, she might start to observe him more closely and realize she has feelings for him too.
Well, one possible plot development could be that Naruto is overjoyed and becomes super protective of Hinata. He might start taking on fewer dangerous missions to be around her more. And Hinata could be dealing with all the hormonal changes while also feeling a bit of pressure as she's now carrying the next generation of the Uzumaki - Hyuga line. There could also be a lot of support from their friends like Sakura, who would be there to help with Hinata's prenatal care.
Well, one possible plot development could be that Millet starts off as an inexperienced servant but gradually learns valuable skills from Naruto. Maybe Naruto teaches Millet some ninja techniques, which in turn helps Millet become more confident and useful in their adventures together.
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.