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, 'naruto future orb fanfic' could be a creative take on the Naruto world. Maybe the orb has some sort of time - traveling capabilities and it takes the characters on a journey through different eras of the Naruto future. It could also be related to a prophecy where the orb is the key element.
In this fanfic idea, when Minato summons Future Naruto, it could also be for emotional reasons. Minato missed out on seeing Naruto grow up. By summoning Future Naruto, he gets to see the strong and capable man his son has become. Future Naruto can then tell Minato about his life, his friends, and all the adventures he's had, filling Minato with pride.
Naruto might encounter future versions of the kages from different villages. These kages could have different leadership styles influenced by the development of the future world. He may also run into new characters who have emerged as heroes or villains in this new era.
Naruto might react with a sense of responsibility. If he saw a future where Konoha was in danger, he would feel it was his duty to do something about it. He could start by gathering information from the future vision, like the weaknesses of the enemy. Then, he would share this knowledge with his comrades and come up with a plan to protect the village.
Naruto might meet his future children. He would be able to see what kind of people they are and what their dreams and aspirations are. It would be an emotional moment for him, seeing his family in the future.
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.
In such a fanfic, Naruto might be shocked by the advanced technology in the future. He could see flying cars and buildings that reach the sky. His ninja skills would be put to the test in a whole new environment where physical strength might not be as dominant as it was in his time.
It could be a rogue ninja who was once a student of Orochimaru and has now developed his own dangerous jutsu. He wants to take over the ninja world and believes the old ways are holding everyone back.
One idea could be Naruto becoming a mentor to a new generation of ninja. He could pass on his unique skills and the importance of friendship and hard work.