Some characters might be shocked. For example, Naruto himself. He has always been full of hope for the future and worked hard to build a better world. If he saw a future that was not as positive as he expected, he would be very disappointed at first. But then he would surely try to find a way to change it, because that's his nature.
Naruto might become more cautious. If he saw a future full of danger in the fanfiction, he would think twice before making his bold moves. He might focus more on training his friends and allies to be better prepared.
One possible plot could be Naruto seeing a future where his friends are in danger. So, he starts training harder in the present to prevent that future from happening. He might see a powerful enemy that his friends can't defeat alone, and this knowledge gives him the motivation to gain new powers or improve his existing skills.
He would likely be very curious. Naruto has always been eager to learn and explore new things, so seeing future fanfiction would be like opening a door to a new world of possibilities for him.
One good practice is to read reviews first. This can give you an idea of whether the fanfiction is well - written and stays true to the Naruto spirit. Another is to look for fanfictions from reliable platforms. For example, some well - known fanfiction websites usually have a screening process.
There might be an old sage - like character who has a vast store of memories and uses them to mentor the younger characters in dealing with the future. They could provide wisdom based on past events and how they might repeat or change in the future.
In most cases, watching (reading) fanfiction is legal as long as it doesn't violate copyright laws in a major way. Fanfiction is often a derivative work, and as long as it's not being sold commercially without permission from the original copyright holder and is more of a non - profit creative exploration of existing works, it's usually okay.
One possible plot could be that Naruto from the past somehow gets a glimpse of the future of Konoha. He sees new threats emerging and starts training in ways that can counter those threats in the future. He might also try to influence the present actions of his friends and allies based on what he saw in the future.
One great source could be some well - known fanfiction websites like FanFiction.net. It has a large collection of Naruto - related fanfics, including those about the future. Another option is Archive of Our Own (AO3), which also has a diverse range of Naruto future fanfictions with different themes and writing styles.
One possible plotline is that Fem Naruto sees a future where her friends are in danger. So, she spends her time in the present training harder and devising strategies to prevent that future from happening. For example, she might see Sasuke being captured by a new enemy, and she starts to learn new jutsu to be able to rescue him.