One possible antagonist could be rogue ninjas from Suna who don't want Naruto to claim any connection to the Third Kazekage. They might fear that Naruto will gain influence over Suna's affairs.
It could be that there are some old enemies of the Third Kazekage who are still alive. They might see Naruto as a way to get revenge on the Kazekage's legacy. They could be from other villages or hidden groups. These antagonists would likely try to stop Naruto from uncovering the full extent of his heritage and the powers or knowledge that come with it, by any means necessary.
Well, it could involve Naruto discovering his connection to the Third Kazekage and having to deal with the newfound family history. Maybe there are some secret jutsus or powers passed down from the Kazekage lineage that Naruto has to master.
One possible antagonist could be those from other villages who see Naruto's new connection to Hashirama as a threat to their own power. They might fear that Naruto will use Hashirama's legacy to dominate in some way.
Naruto is the central character as the story is about him being the son of the Third Kazekage. Temari and Kankuro from the Sand Village could also be main characters. They may have memories or stories about the Kazekage that could help Naruto. And of course, Kakashi, Naruto's teacher, would play a role. He would be there to guide Naruto through this new discovery and protect him from any threats that come with this new identity.
Well, it could be about Naruto having a hidden connection to the Third Kazekage. Maybe there are secrets about his birth that are slowly revealed. It might involve Naruto having to deal with newfound powers related to the Sand Village and his supposed relation to the Kazekage. There could also be a lot of drama as the Hidden Leaf and the Sand Village react to this new revelation.
Obviously, Naruto and the Kazekage are the main characters. Naruto, with his determination and powerful jutsus, and the Kazekage, who represents the power and mystery of the Sand Village.
It could be a group of dark wizards who want to use the grandson's connection to Le Fay for their own evil purposes. They might try to kidnap him or manipulate him to get access to the powerful magic associated with Le Fay.
The Sound Ninjas could be great antagonists. They could use their own unique parkour - like skills to try and stop Naruto. They might be chasing him through the forest, and Naruto has to use his parkour skills to outmaneuver them.
Maybe some corrupt officials within the prison system itself. They oppose Naruto's more humane and reform - focused approach to prison management. They might try to undermine him at every turn, for example, by cutting off resources or spreading false rumors about him among the prisoners.
Maybe a group of dark - type Pokémon that have banded together and are trying to overthrow Arceus. They view Naruto as an easy target at first, but quickly realize he is a formidable opponent with his ninja skills and new Pokémon - related powers. They would constantly try to undermine Naruto and his efforts to protect the Pokémon world.
Yes, there could be such a fanfiction. It might be about Naruto taking on the role of the Kazekage for some reason. Maybe there's a plot where Konoha and Suna form an even closer alliance and Naruto is sent to Suna to lead as Kazekage for a time. This could lead to all sorts of interesting scenarios, like Naruto having to deal with the different political and cultural aspects of Suna compared to Konoha.