Naruto's relationships with his mentors could also change. They might start to treat him more as an equal, sharing more advanced knowledge with him. His relationship with Iruka sensei could shift from a teacher - student dynamic to more of a friendship between two equals. And with Kakashi, they could engage in more in - depth discussions about the ninja world and its future, as Naruto is now seen as someone who can contribute valuable ideas, not just a brash young ninja.
Well, in the context of fanfiction, it might suggest that the author wants to break the stereotype of Naruto being a bit of a goofball in the original series. He could be portrayed as having deeper understanding of the ninja world, politics, and the people around him. For example, he might be more perceptive about the true intentions of his enemies or allies, making decisions based on more than just his initial impulses.
The fanfiction can also explore different relationships. Maybe Sasuke from Naruto is intrigued by Nobunaga's leadership style and tries to learn from him. Or perhaps Sakura is a healer in Nobunaga's army, using her medical ninjutsu to save soldiers. These kinds of crossovers allow for a fresh take on the characters we know from Naruto and introduce them to a whole new historical and cultural context.
One of the great Naruto Nobunaga the Fool fanfictions is 'Naruto in Nobunaga's Court'. In this story, Naruto is transported to Nobunaga's time and has to use his ninja skills to survive and make a name for himself. It has a great blend of action and historical elements.
Since it's a fanfiction, it could be a very unique take on the Naruto franchise. 'Everybody is a fool' could imply that no one is perfect and all the characters, from the main ones like Sasuke and Sakura to the minor ones, have their own moments of folly. It might be about their wrong assumptions, bad decisions, or just general cluelessness. It could also be a way for the author to show that even in a world of ninjas with extraordinary skills, they are still just humans (or human - like) and are prone to acting like fools at times. This fanfiction could be exploring the more comical and less glorified side of the Naruto characters.
One possible reason could be a major ideological difference that has grown over time. Maybe Sasuke has adopted a more extreme view on protecting the village or avenging his clan that Naruto can't support. Another reason might be a misunderstanding that has festered. For example, if Sasuke was misinformed about Naruto's actions and intentions and has cut off ties because of it.
One possible reason could be that he has become jaded after facing so many hardships in his life. He might have seen too much pain and loss, which has made him numb and less caring in the fictional scenarios of fanfiction.
It could mean that the Naruto story has evolved beyond the typical definition of ninja - themed fanfiction. Maybe it has taken on new elements or themes that are not strictly related to the traditional ninja aspects that were central to the original fan - made works.
You could try looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. They have a large collection of Naruto fanfictions, and you might be able to find it by using the search function and typing in the exact title.