One possible plot could be Naruto facing challenges in finding food and shelter while on the street. He might meet other outcasts and form a kind of street family, using his ninja skills in creative ways to survive, like stealing food from corrupt merchants without getting caught.
Naruto would become more self - reliant. Without the support system of the village, he'd have to figure out how to survive on his own. This would make him tougher both physically and mentally.
Survival is a common theme. Harry has to figure out how to survive on the streets, which is a far cry from his life at Hogwarts. Another theme is self - discovery. Without the structure of the wizarding school, he has to learn more about his own strengths and weaknesses.
I'm not sure of the exact title, but there's a great 'Harry Potter lives on the street' fanfiction that focuses on his relationship with other street kids. They initially don't trust him because of his strange behavior due to his magic. But as the story progresses, Harry uses his magic to help them out in various ways, like creating warm fires during cold nights or finding hidden stashes of food. It's a heart - warming story that shows the power of kindness and magic in difficult situations.
It might be about Naruto living freely in a sense that he can make his own choices regarding his relationships. For example, he could choose his friends and allies more freely without political interference. In this fanfiction, he might not be bound by the traditional shinobi rules and hierarchies, allowing him to interact with different clans and villages on his own terms.
He could also interact with the scientists on Pandora. They might be interested in Naruto's abilities and study him. Naruto could in turn learn about their technology, which is so different from what he has in his own world. He might even help them solve some problems they have on Pandora using his ninja wisdom.
One common theme is competition. Just as in the Naruto series where he battles opponents, in the street racer fanfiction, he competes against other racers. Another theme is friendship. His friends from the original series might support him in his racing endeavors, like Shikamaru helping him strategize for races.
One popular 'Naruto is a street racer' fanfiction could be 'Naruto: Street Racer Ninja'. In this type of fanfiction, Naruto's ninja skills might be translated into his driving abilities on the street racing track. For example, his quick reflexes from being a ninja could help him make sharp turns and avoid obstacles while racing at high speeds.