One possible plot could be that Naruto, through some sort of interdimensional rift, ends up in the Street Fighter universe. There, he meets the female characters like Chun - Li, Cammy, etc. They initially see him as an oddity but gradually become attracted to his tenacity and unique ninja skills. Naruto, in turn, is both bewildered and intrigued by these new and powerful women, and they form a sort of harem around him as they go on adventures together, fighting common enemies and learning from each other's fighting styles.
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.
One possible plot could be that the Akatsuki from Naruto are hired by a powerful and mysterious figure in the Street Fighter world to disrupt a major martial arts tournament. Naruto and his friends, along with some Street Fighter characters like Ryu and Ken, have to team up to stop the Akatsuki's evil plans. They face challenges like learning each other's fighting styles and dealing with the Akatsuki's unique abilities.
One interesting plot could be that the characters from Harry Potter are magically transported into the Street Fighter universe. Harry, Hermione, and Ron could find themselves in the middle of a Street Fighter tournament. They would have to learn the fighting styles of the Street Fighter characters quickly in order to survive. Hermione might be intrigued by the different magic - like powers the Street Fighter characters possess and try to figure out a way to use that knowledge to get them back home.
One possible plot could be that the Pokemon trainers from different regions are invited to a special tournament. However, this tournament has a twist - it's combined with Street Fighter rules. Ash, for example, enters with his Pikachu. Pikachu has to fight using Street Fighter - like moves, like hadoukens instead of electric bolts. The trainers must also learn new combat skills to help their Pokemon. This creates a whole new dynamic where Pokemon battles are more like the intense one - on - one fights in Street Fighter.
One idea could be that Naruto characters are transported to the Street Fighter universe and have to learn the fighting styles there. For example, Naruto might be intrigued by Ryu's Hadoken and try to incorporate it into his own Rasengan. Another could be a tournament where both Naruto and Street Fighter characters compete. Sakura could face off against Chun - Li, with Sakura using her medical ninjutsu in unique ways during the fight.
A great plot point would be the search for a common enemy. Suppose there is a powerful being or force that is threatening both the Street Fighter and Mortal Kombat universes. This would force characters from both sides to come together. For instance, if M. Bison somehow got his hands on some Mortal Kombat magic or technology that made him even more powerful and started to invade both worlds. The Street Fighter characters would have to team up with Mortal Kombat warriors like Raiden and Kitana. Also, the idea of characters learning new fighting techniques from each other is exciting. Imagine Juri learning Scorpion's teleportation move and using it in a creative way against her Street Fighter foes.
A cool plot could involve Akuma from Street Fighter accidentally being transported to the Mortal Kombat realm. There, he's seen as a new threat, and Sub - Zero decides to take him on. But during their fight, they realize that there are greater forces at work trying to start a war between the two realms. So instead of fighting each other, they join forces, along with other fighters like Ken and Johnny Cage, to stop the real enemy that wants to see both worlds destroyed.
One idea could be a crossover tournament where Naruto characters like Naruto, Sasuke, and Sakura enter the Street Fighter universe to compete. They could learn new fighting styles from the Street Fighter characters and form unique friendships or rivalries.
One common theme is the combination of different fighting styles. In Naruto x Street Fighter harem fanfiction, you often see Naruto characters using Street Fighter moves and vice versa. Another theme is the building of relationships within the harem. For example, how Naruto or a Street Fighter character interacts with multiple love interests from both universes. Also, the exploration of different power levels is a theme. It's about how the power of a Naruto character stacks up against a Street Fighter character in the context of this unique crossover and harem setting.
For Naruto, Hinata is a strong possibility. She has always had deep feelings for Naruto. In the Street Fighter universe, Ibuki could be part of the harem. She is young and energetic. Also, Makoto would be a great character to include. She is known for her strong punches and kind heart. These characters would create a diverse harem around Naruto, with different fighting styles, personalities, and backstories contributing to the overall story of the fanfiction.