Kakashi could also play a crucial role. He has always been like a mentor to Naruto. He could use his wisdom and experience to guide Naruto back on the right path. Maybe he has some knowledge about the situation Naruto is in and can offer practical solutions.
Sasuke could be one of them. Despite their past differences, Sasuke might sense that Naruto is in trouble and come to his aid. After all, they have a deep connection.
In addition to Naruto, Kakashi could be a key character. He's Naruto's teacher and mentor. He might be guiding Naruto from afar or actively searching for him. Also, characters like Jiraiya could be involved. Jiraiya has had a big influence on Naruto, and his teachings could be what Naruto is reflecting on while lost.
Well, in such a fanfiction, Naruto might find himself in a strange new land where he has no idea how to get back home. Maybe he loses his memories and has to start from scratch to figure out who he is and what his purpose is.
It could be Orochimaru. He is known for his devious ways and might manipulate Naruto into believing false things about the ninja world.
Sakura could be there. As Naruto's friend, she might be the child's doctor, always ready to heal any injuries. She could also give parenting advice to Naruto based on her medical knowledge.
One possible storyline could be that Naruto's wife was killed during a major battle against a new and powerful enemy. This would send Naruto into a deep state of grief and depression, perhaps causing him to question his purpose as a shinobi. He might then embark on a journey to find the true cause of her death and seek revenge.
Iruka - sensei could be one of those who help Naruto. He has always been like a father figure to Naruto and would offer emotional support. Rock Lee could also be a great helper. Lee, who has trained his body to be extremely powerful, could teach Naruto some physical combat techniques that don't rely on eyesight. And of course, the Nine - Tails inside Naruto might also play a role. It could potentially share some of its power or knowledge to help Naruto deal with his new situation.
Sasuke could be one of the people who help him. Despite their past differences, they have a deep bond. Sasuke has his own skills and knowledge that could be useful in Naruto's situation, like his Sharingan abilities which could help in detecting enemies while Naruto is hiding his face.
Well, usually it happens through some kind of special event or mission that reveals hidden secrets.
The Hokage, like Kakashi or Tsunade, could also be important characters in this fanfiction. They would have to deal with the political implications of Naruto being a lost prince. Their reactions could range from trying to protect Naruto and use his new status for the good of the village, to being worried about how it will disrupt the existing power structure.
Jiraiya could play a crucial role. As Naruto's mentor, he might have left behind some hidden teachings or prophecies that Naruto discovers in the fanfiction. These could guide Naruto on a path to unlock new powers or understand the secrets of the ninja world better.