One common theme is the struggle for power. Naruto has to push himself to the limits to become a brutal fighter, often facing stronger opponents. Another theme is self - discovery. As he becomes more brutal in his fighting, he also discovers new aspects of himself.
Well, Naruto is definitely one of the main characters since it's in the title. He would be the central fighter. Sakura might also be a main character, perhaps as Naruto's support or even as a fighter herself, using her medical ninjutsu in combat in new and creative ways.
Sasuke could be one of his allies. Sasuke's natural combat skills and his sharingan would make him a great asset in aerial battles. He could quickly analyze the enemy's movements and strategies.
One possible plot could be Naruto using his ninja skills in the context of flying. Maybe he has to use his quick reflexes to dodge enemy fire while in the air. His ability to sense danger could be translated into anticipating enemy attacks during aerial battles.
Maybe Naruto is transported into the Street Fighter world. He could use his ninja skills in the Street Fighter battles, like using his shadow clones to confuse opponents. And perhaps he teams up with some of the Street Fighter characters to fight against a common enemy.
I'm not sure about a specific 'Naruto is a Street Fighter' fanfiction to recommend. You could try searching on fanfiction websites like FanFiction.net or Archive of Our Own. They usually have a wide variety of fan - made stories.
One idea could be to create a story where Naruto discovers a new and powerful fighting style from an ancient scroll. Another could be a fanfiction about a tournament among all the ninja in the Naruto universe, with unique rules and unexpected alliances. Or perhaps a story where Naruto has to fight an enemy who can copy his every move and he has to find a way to outwit them.
One common theme is the clash of different fighting styles. The ninjutsu of Naruto characters and the martial arts of Street Fighter characters create really cool battle scenes. For example, Sasuke's lightning - based attacks against Chun - Li's lightning - fast kicks.
I like 'Naruto's Brutal Ascent'. It focuses on Naruto's journey as a brutal fighter. The story dives deep into his training regime and how he overcomes his weaknesses. It also has some unique plot twists, like Naruto finding an ancient scroll that teaches him a set of powerful and brutal fighting techniques. This fanfiction really showcases Naruto's determination and his evolution as a fighter.
One way is through the power systems. The chakra in Naruto and the energy used in Street Fighter can be merged. For instance, a character could use chakra to enhance the power of a Street Fighter move like Chun - Li's Spinning Bird Kick.