One possible plotline could be Naruto trying to mimic Kakashi's calm and collected demeanor during a difficult mission. For example, when facing a powerful enemy, Naruto might hold back his usual冲动 and instead analyze the situation like Kakashi would. He could start using Kakashi - style strategies, like setting up elaborate traps or using misdirection to gain an advantage.
Maybe he's on a secret mission. He could be trying to infiltrate an enemy group that Tobi was associated with. By acting like Tobi, he hopes to gain their trust and gather information.
Maybe Naruto is put in a situation where he feels that Hiruzen's way of handling things is the best option. For instance, if there is a major crisis in the village that requires a more traditional and experienced approach, Naruto might choose to act like Hiruzen. Also, he could be influenced by the stories he has heard about Hiruzen and wants to fill his shoes in a way.
Maybe Naruto admires Kakashi's skills. Kakashi is a highly respected ninja, and Naruto might want to be as good as him. So he starts acting like him to learn from him.
One plot idea could be that Naruto decides to follow in Jiraiya's footsteps as a spy. He disguises himself and infiltrates an enemy organization. Just like Jiraiya, he has to gather intelligence while also being careful not to blow his cover. Another idea is that Naruto starts his own training school in the style of Jiraiya, teaching a new generation of ninjas his unique techniques and the values he learned from Jiraiya.
His relationship with Sasuke would likely be affected. Naruto, acting like Kakashi, might approach Sasuke with more reserve and understanding. Instead of his usual passionate attempts to bring Sasuke back, he could use Kakashi's more laid - back and strategic approach. This could either intrigue Sasuke or make him more distant, depending on how he interprets Naruto's new behavior.
In some fanfictions, there might be Naruto - related shops near areas that could be considered 'underworld - like'. However, it really depends on the creativity of the fanfiction author. Some might create such unique settings for the sake of plot twists or to introduce interesting new elements into the Naruto universe within the fan - made story.
One reason for this in fanfiction could be to give Naruto a different kind of arc. Instead of the somewhat positive neglect in the original (where it was more about being alone but still having some hope), here it's a full - blown abandonment. And his near - death experience can be used to show how fragile he really is, despite his strong - willed nature in the main series.
It might be for the sake of shipping. If a writer wants to create a certain romantic or platonic relationship that they think would be interesting, having Naruto act like Sasuke can change the dynamics in a way that makes that relationship more plausible or exciting. For example, in a story where a character is in love with Sasuke - like qualities, Naruto taking on those qualities can add a whole new layer to the relationship.
To act like Jiraiya in fanfiction, Naruto should adopt Jiraiya's courage. Jiraiya was never afraid to face strong opponents. Naruto could show this by taking on difficult missions alone or standing up against powerful villains without hesitation. Jiraiya was also a bit of a loner at times, and Naruto could have moments in the fanfic where he goes off on his own to train or to think. This would add depth to his character, showing that he's not just the boisterous Naruto we know, but also someone who can be introspective like Jiraiya.