One great Sasuke Uchiha RWBY crossover fanfiction is 'Sasuke in Remnant'. It really nails the concept of Sasuke being in the RWBY world. The author does a good job of integrating Sasuke's abilities and personality into the RWBY universe. His Sharingan makes for some really interesting interactions with the Grimm, and his brooding nature fits well with the darker aspects of Remnant.
One creative plot is when Sasuke is in a crossover with the Final Fantasy universe. He becomes a part of a party of adventurers. His skills are translated into the game - like mechanics of the Final Fantasy world. For example, his Sharingan could be like a special ability that can analyze enemy weaknesses. Another is when he crosses over to the Star Wars universe. Sasuke could be a Jedi - like figure, using the Force in a way that is influenced by his ninja training. His lightsaber (if he has one) would be a unique weapon, perhaps with some ninja - style modifications.
Naruto would be an interesting character to pair with Sasuke. Their long - standing relationship and the contrast between Naruto's positive energy and Sasuke's more brooding nature could create great drama in a crossover situation. Especially when Sasuke has the Rinnegan, Naruto might have to adjust his way of fighting and interacting with him.
One possible plot could be Sasuke arriving in the Fairy Tail world. He might initially be seen as an enemy due to his cold demeanor and powerful abilities. But as the story progresses, he could team up with the Fairy Tail guild members. For example, he could form a bond with Natsu. They might start off not liking each other, but when facing a common powerful enemy, they realize they need to work together. Sasuke could teach some of his ninja techniques to the Fairy Tail wizards, and in turn, he could learn about magic from them.
Sasuke would be a very powerful addition to the RWBY world's power structure. His Sharingan gives him enhanced perception, which would be extremely useful against the Grimm. He could easily analyze their attack patterns and weaknesses. Also, his ninjutsu skills like the Chidori and Fire Style: Great Fireball Jutsu are very powerful. In terms of the Huntsmen and Huntresses ranking, he would probably be considered an S - class level threat or fighter due to his abilities.
One great Sasuke Uchiha crossover fanfiction is 'Sasuke in the Marvel Universe'. In this story, Sasuke is transported to the world of Marvel. His ninja skills and Sharingan make him a formidable presence among the superheroes. He has to adapt to a completely different set of powers and enemies. Another interesting one is 'Sasuke and the World of Harry Potter'. Here, Sasuke enters Hogwarts. His combat abilities are a shock to the wizarding world. He tries to find a way back home while also getting involved in the magical conflicts. And 'Sasuke Meets the Justice League' is also quite popular. Sasuke's dark and brooding nature contrasts with the more heroic and idealistic members of the Justice League.
One unique plot idea could be Sasuke traveling to an alternate universe where the Rinnegan has different powers. He might have to team up with versions of his former enemies to face a new, greater threat. For example, working with Orochimaru to stop a rogue group of ninja who are misusing the power of a corrupted Rinnegan.
Sasuke's Sharingan would be a very unique ability in the Fairy Tail world. It could give him an edge in combat against wizards. For example, he could use it to predict their attacks and counter them quickly. His fire - style jutsu could be on par with some of the fire - based magic in Fairy Tail, like Natsu's Dragon Slayer magic. Sasuke could also use his ninja skills such as stealth and quick movement to surprise his opponents in this new world.
One common theme is the exploration of gender differences. Since Sasuke is a male in the original, in these fanfictions, a female Sasuke might face different expectations in the ninja world. Another theme is relationships. A female Sasuke could have different types of relationships with characters like Naruto or Sakura. For instance, a more sister - like bond with Naruto instead of a rival - like one.
One great Sasuke Uchiha x Reader fanfiction is 'A Path with Sasuke'. It beautifully portrays the relationship between Sasuke and the reader. The story has amazing character development and the descriptions of their interactions are really heart - warming.