He might get some insights into different possible futures for himself and his friends. It could be both inspiring and a bit disconcerting as he sees versions of events that may or may not come to pass.
Well, if Konoha 12 watches the future 7th Naruto in fanfiction, they would probably have mixed reactions. Some, like Shikamaru, might immediately start thinking about the implications of Naruto's future actions on the present. Others, like Kiba, might be more excited to see Naruto's new jutsu or how he has become even stronger. And Sakura might be emotional, seeing how Naruto achieved his dream and how much he has changed from the boy she once knew.
If Naruto watches Naruto fanfiction, it would be a mind - boggling experience for him. He would see how his fans have taken the elements of his story and twisted them in different ways. He might come across fanfictions that explore his family history in more depth than the original series. Or he could find ones that pair him with characters in unexpected romantic relationships. He might even learn something new about himself from the fan interpretations, although he would also probably have to deal with a lot of out - there ideas that don't quite match his own understanding of his life.
Well, if Naruto watches fanfiction, it could be a strange experience for him. He'd see how fans view his relationships, like his friendship with Sasuke. Some fanfictions might show them in really close or different ways. He might also learn new things about how his world is perceived by others outside of Konoha.
Well, he might be shocked by how things turn out. He could see the fates of his friends, like whether Ron and Hermione's relationship endures. Maybe he'd find out if Hogwarts still stands strong or if there are new threats to the wizarding world that he hadn't anticipated.
They might be amused. Some of the fanfictions can be really creative and different from the original story. They could enjoy seeing new interpretations of their characters and relationships.
If Naruto watches The Giver fanfiction, he could be inspired in some ways. Maybe he'd see the importance of memories in a new light. In his own story, he has his own memories of his parents and friends that drive him. He might start to think about how the characters in the fanfiction deal with the burden of certain memories and apply it to his own life, like how he deals with the memory of the Nine - Tails inside him.
Well, Naruto might be really confused at first. He's from a world of ninjas and suddenly he's exposed to the world of BNHA with its own set of rules, powers and characters. He might be intrigued by the different kinds of quirks and how the heroes and villains interact. He could start comparing his own ninja skills to the quirks he reads about. Maybe he'd think some of the quirks are really cool and wish he had something like that in his world.
If Naruto watches the multiverse fanfiction, he could gain new perspectives. Maybe he'd see how different choices in other 'Naruto - like' universes led to different outcomes. This could inspire him to think about his own choices in his world, and perhaps even consider alternative ways of doing things in his ninja career.
Well, he might be really surprised. Some fanfictions could show Boruto in situations he never imagined. He could be proud of the creative ideas fans have about his son's adventures.
Well, he might be really confused at first. Naruto comes from his own ninja world in 'Naruto', and 'Bleach' has a very different setting with Soul Reapers and Hollows. He'd probably be intrigued by the unique concepts in the Bleach fanfiction, like the zanpakuto and the different realms.