In the 'everyone sees naruto's future fanfiction', it could be that they see Naruto's future self as being too powerful for his own good. He might be on a path that leads to him being isolated because of his strength. His friends then would strive to guide him onto a different path, one where he can still be strong but also maintain his relationships.
One possible plotline could be Naruto seeing a future where his friends are in great danger and he has to find a way to change the course of events. For example, he might see that Sasuke is about to be captured by a powerful enemy, so he starts training extra hard to be able to rescue him.
One interesting idea could be how the characters use their knowledge of the future to prevent disasters. For example, if Natsu knew that a powerful dark guild was going to attack Magnolia in the future, he might train harder or seek out new powers to stop it. Another idea could be the moral dilemmas that come with seeing the future. If Lucy saw that a friend would die in a future battle, would she try to change it even if it meant disrupting the natural order? And perhaps some fanfictions explore how seeing the future affects the relationships between the characters. Maybe Gray, who has always been a bit reserved, becomes more open and protective of his friends when he realizes what could happen to them in the future.
The main characters are Naruto and his comrades. Iruka, Naruto's first teacher, could be in it too. He has always been like a father figure to Naruto. In the fanfiction, he might be one of the first to notice something strange about Naruto's future. Then there are Naruto's other friends from the village like Kiba and Choji. They would all react differently to seeing Naruto's future. Kiba might be more impulsive in his actions to change it, while Choji might be more cautious but still determined to help Naruto have a better future.
One idea could be exploring how Naruto's children deal with new threats to the Hidden Leaf Village. Maybe they face a villain who has found a way to use ancient, forbidden jutsu that Naruto and his friends had long forgotten about.
One idea could be Naruto's son or daughter discovers a new and powerful jutsu that was lost in time. This jutsu could potentially change the balance of power in the ninja world.
One popular fanfiction could be 'Naruto: The Revealed Past'. In this, characters from different villages get to witness Naruto's lonely childhood through some sort of magical jutsu gone wrong. They see how he was shunned and neglected, which changes their perception of him. Another could be 'Past Unveiled: Naruto's True Story' where the Akatsuki members accidentally stumble upon Naruto's past memories during a mission. This makes some of them question their motives against him.
Definitely Sasuke. His complex relationship with Naruto always adds an extra layer of tension and drama to the fight scenes. He has his own motives and power - ups which can make the battles unpredictable.
One interesting plot could be Peter seeing a future where his friends are in danger and he has to figure out how to prevent it. He might struggle with whether to tell them or try to handle it alone.
One idea could be Naruto going on a journey with all his friends and allies from different villages at once. They could face a new, powerful enemy that requires the combined skills of everyone. Another could be Naruto having a series of heart - to - heart conversations with each character, exploring their backstories and forming deeper bonds. Maybe a situation where Naruto has to teach his unique jutsu to everyone in the group, leading to some comical and also powerful new combinations.
Well, in a fanfiction where everyone sees Naruto's memories, it would be a wild ride. For one, Naruto has so many memories related to his training with Jiraiya. These could inspire the younger generation of ninjas to train harder. His memories of the Akatsuki battles could give the ninja villages a better understanding of their enemies. Also, his personal memories of loss, like the death of his parents, could make the villagers more protective of him and more committed to the idea of peace in the ninja world.