In this type of fanfiction, it could be that Naruto's newfound power or the way he retrieved Sasuke doesn't sit well with the traditionalists in the village. They might view his methods as too radical or dangerous. As a result, they start spreading rumors about Naruto being a threat. His friends start to believe these rumors gradually, and Naruto finds himself alone. He then has to struggle not only against the village's distrust but also against his own feelings of betrayal and confusion. He may have to make some tough choices between loyalty to the village and loyalty to his own beliefs.
Well, perhaps in the fanfiction, after bringing Sasuke back, Naruto discovers that there are some secrets that the village has been hiding from him all along. When he tries to expose these secrets, the village sees it as a betrayal and turns against him. He might then be forced to team up with some unexpected allies outside of the village to clear his name and fight for what he believes is right. It could also be that Sasuke's return actually brings some kind of curse or danger with it, and Naruto is wrongly blamed for it.
Some of Naruto's former friends who have been influenced by the negative propaganda against him could also be antagonists. They might be misled into believing that Naruto has changed for the worse. They could actively oppose Naruto, either by trying to capture him or by preventing him from doing certain things. Another possibility is that there could be a hidden group within the village that has a vendetta against Sasuke and, by extension, Naruto for bringing him back.
Naruto may turn more cautious. The Sasuke retrieval was a dangerous and complex situation. In fanfiction, it could make him think twice before jumping into action. He may analyze situations more carefully to avoid potential disasters. For instance, he won't be as quick to engage in a fight without considering all the possible outcomes. This is a big change from his usually head - first approach. He may also become more protective. Having almost lost Sasuke, he could be overprotective of his friends and the village, constantly on guard to prevent any harm from coming to them.
In this type of fanfiction, Naruto could be banished to a far - off land. Maybe he discovers a new form of chakra or ninja technique there. He could also form a new community with outcasts like himself. As for the village, Sasuke might feel guilty about Naruto's banishment and try to convince the village elders to reverse their decision. But the political situation in the village could be complex, with some factions seeing Naruto as a threat even after he retrieved Sasuke.
In this fanfiction, perhaps Naruto discovers a dark secret about the Wave mission that the higher - ups in Konoha don't want him to know. And when he tries to expose it, they make it look like he's betraying the village to the Wave people, leading to his betrayal.
The relationship between Naruto and Sasuke is complex. In this retrieval fanfiction, their past memories together could play a big role. Flashbacks of their time at the ninja academy, their first missions, and the bond they formed could be used to heighten the drama of Naruto's quest to bring Sasuke back.
One possible plotline could be that Mei misinterprets Naruto's actions as being a threat to her village. Maybe Naruto's attempts to bring peace and unity among the villages are seen by Mei as him trying to gain too much power. So, she betrays him by spreading false rumors about him, which turns many against Naruto.
Friendship is a very common theme. Naruto's strong bond with Sasuke is at the heart of the retrieval arc in the original story, and fanfictions often explore this further. They show how Naruto's love for his friend drives him to go to great lengths to bring Sasuke back.
In some fanfictions, Naruto may become more mature. After going through the arduous process of retrieving Sasuke, he realizes the complexity of relationships and the importance of his comrades more deeply. He might also become more reserved in his emotions, as the experience has made him more aware of the consequences of his actions and words.
One possible plotline could be Naruto constantly making inappropriate comments or gestures towards Sasuke, which would create a lot of tension between them. Another could be Naruto having some sort of strange obsession with Sasuke's abilities or appearance in a perverted way. Maybe he tries to follow Sasuke around all the time just to be near him for the wrong reasons.
Well, Naruto would probably face a lot of tough opponents. Since Sasuke has his own goals and might be with some powerful people, Naruto would have to fight his way through. He might encounter new jutsus and strategies that he has to overcome.