Some characters like Naruto might gain new perspectives. He could see how others view his journey and might get inspired to try new things. He might think 'Hey, this fanfic has a cool idea for a new jutsu!'
For Kakashi, he'd probably be amused by a lot of the fanfiction. But he might also be a bit concerned if some of the stories showed his students in a bad light. He'd think about how the fanfiction reflects the fans' understanding of the Naruto world and how he can perhaps influence it better. He might say to himself 'I need to make sure my students are seen in the right way, not just in these crazy fan stories'.
Sasuke would likely be more critical. He'd scoff at some of the fanfiction that portrays him inaccurately. But he might also secretly enjoy the ones that show his growth and development in a new light. He'd be all like 'This one has some truth to it, but this other one is just nonsense'.
They might be quite surprised. For example, Naruto himself would probably find it really strange to see different interpretations of his adventures. He might be amused by some of the over - the - top heroic portrayals of him, or confused by out - of - character actions in the fanfiction.
By their unique abilities. Naruto's Rasengan, Sasuke's Sharingan, these abilities can be the starting point for many fanfiction ideas. Writers can think about how these abilities could be used in different battles or situations not shown in the original.
Naruto characters' perception of themselves could be greatly affected. Take Rock Lee for example. If he reads fanfictions where he is shown as an even greater martial artist than in the original, he might strive even harder in his training, feeling like he has more potential. On the contrary, characters like Gaara, who has had a difficult past, might be troubled if the fanfictions misinterpret his journey of redemption. And characters like Kiba might find it amusing or annoying depending on how the fanfictions depict his relationship with Akamaru. Overall, it would be a very mixed bag of reactions and changes in self - perception.
Kiba and Akamaru might find it really funny. They have a more light - hearted nature. They would enjoy reading about the different battles and situations the characters are put in, in the fanfiction. They might even get some inspiration for their own training or adventures from the wild ideas in the fanfiction.
I don't think it's strange at all. Naruto is a very curious person. Fanfiction can offer new perspectives on his own life and the lives of his friends. He might learn something new about himself or get inspired by the creative ideas in the fanfiction. It could also be a form of entertainment for him during his downtime.
For Hinata, it would be a crushing blow. She loved Naruto so much. She might withdraw into herself at first, overcome with grief. But then, she could find the strength within herself to carry on Naruto's legacy, especially for their son, Boruto (if in a post - Naruto - has - a - family scenario in the fanfiction). Shikamaru, being Naruto's friend, would feel a deep sense of loss. He would use his intelligence to try to figure out what led to Naruto's death and if there was any way to prevent it in hindsight. And the other members of the Leaf Village would be in a state of shock and mourning. Naruto was their hero, and his death would make them question their safety and future without him.
Naruto might be a very introverted and cold - hearted character. Instead of his usual sunny and determined self, he could be more calculating and self - centered.
Minato might gain new perspectives on the potential of his students. For example, he could see in fanfictions how Naruto or Sasuke could have developed in different ways. Kakashi might start to question some of his own beliefs about the ninja world if he reads some thought - provoking fanfictions. Obito and Rin could see different versions of their own fates and it might make them think about their roles in the original Naruto story.
The Naruto world would be turned upside down. With Naruto being raised by Kaguya, his understanding of chakra and the ninja way would be completely different. He might introduce new forms of jutsu based on Kaguya's ancient knowledge. The balance of power among the ninja clans would be disrupted. His upbringing by Kaguya could also lead to a change in the social structure of the ninja villages. For example, he might promote a more hierarchical system similar to what Kaguya might have been used to, instead of the more democratic - ish system that was in place in the original story.