Well, they might be shocked at how much technology has advanced in the future depicted in the fanfiction. Maybe there are new types of elemental powers or different ways of training ninjas. It could also be that the relationships between characters have changed in unexpected ways, and they would have to come to terms with that.
He might be shocked. In the fanfic, if he sees things like his friends' future achievements or the new threats that emerge, it would surely startle him. For example, if he discovers that one of his friends has a family of their own and has become a great leader in the village, he would be proud but also a bit surprised at how much has changed.
They might gain a new perspective on their own abilities. If the future fanfiction shows ninjas with enhanced powers, the past characters could start to think about how they could develop their skills further. For example, if in the future they can combine elemental powers in new ways, the past ninjas might start experimenting.
With his usual determination. Naruto has always been one to face difficulties head - on. So, even if he's shocked by what he sees in the fanfic's future, he'll likely try to find solutions immediately.
The older characters such as Kakashi would be cautious. They would recognize Naruto but also be worried about the implications of someone from the future being in the present. They would want to know if his presence could change the future in a negative way. For example, they might fear that his actions could lead to the earlier awakening of a powerful enemy. As for the villains, they might see future Naruto as a threat and try to eliminate him as soon as possible. Orochimaru, for instance, would be very interested in Naruto's future powers and might try to capture him to study. And the new generation of ninja in the past would look up to future Naruto, seeing him as a symbol of what they could become.
Well, in the context of Naruto fanfiction, 'Team 7 watches the future' might be a scenario where a powerful jutsu or a special artifact allows them to view what lies ahead. This could be a turning point in their development. For example, they might see a future where a great evil rises again and this knowledge could change their current training and decision - making. They could start preparing for that future threat, perhaps by learning new jutsus or forming alliances that they wouldn't have considered otherwise.
Well, one possibility is that future Naruto has some sort of warning about a great danger that is coming to their present time. So, he travels back to meet Team 7 to prepare them. Team 7 would then have to deal with the knowledge that they are somehow crucial in preventing this future threat. And of course, there would be a lot of emotional moments as they see what Naruto has become.
Well, for the Avengers, it depends on the nature of the future shown. If the future is full of chaos and destruction, Captain America would likely feel a great sense of responsibility to prevent that from happening in their own time. He would start formulating plans and strategies right away. Black Widow, on the other hand, would be more cautious. She would analyze every detail of the future situation to figure out who the real threats are and how to neutralize them. Hulk might be confused and a bit scared at first, especially if the future technology seems like it could be used against him. But then he might see opportunities to use it for good, if he can get over his initial fear.
There are quite a few things. For one, he could teach past Naruto about the deeper secrets of the Uzumaki clan. Since Future Naruto has explored more about his heritage. He could also give tips on handling the Kyuubi's chakra more smoothly. Maybe some new jutsu combinations that he discovered over the years. And not to forget, how to better read an opponent's moves during a fight, which is a skill he would have refined over time.