One interesting storyline could be Naruto using the Sharingan to enhance his combat skills in a new and unexpected way. For example, he might combine his Rasengan with Sharingan - powered genjutsu to create a more powerful and deceptive attack.
Another could be a time - travel scenario where Naruto goes back in time and meets Rikudou Sennin. They then team up to prevent a great evil from ever arising in the first place. This would allow for a lot of character development and exploration of the Naruto universe's history.
One possible storyline is a cross - over where the ninjas in Naruto are exposed to the equivalent exchange principle of alchemy. They might start using it in their training, like instead of just relying on chakra, they think about what they are giving up to gain a new skill. For instance, a ninja might give up some of his speed to gain more strength. In the case of the Fullmetal Alchemist characters in the Naruto world, they could be involved in the battles between the villages. Alphonse could use his armor body to protect the villagers from attacks. And Scar from Fullmetal Alchemist could have an interesting interaction with the shinobi, as his unique form of alchemy might be seen as a very different type of jutsu.
One interesting storyline could be the combination of Naruto's ninjutsu with Final Fantasy 7's materia system. Imagine Naruto using materia - enhanced jutsus. Another could be Cloud and Naruto teaming up to fight a common enemy like Sephiroth and Madara combined. It would be epic to see their different fighting styles blend.
One possible interesting storyline could be a female Naruto ending up in the Bleach universe and learning about the different spiritual powers there. She might try to adapt her ninja skills to the new environment filled with Hollows and Soul Reapers. Another could be a Bleach character getting transported to the Naruto world and being amazed by the chakra system. For example, Ichigo might be curious about how chakra is different from his reiatsu.
Well, it changes a lot. For one, Naruto's power level gets a significant boost. Instead of relying solely on his Uzumaki chakra and Sage Mode, he now has the Sharingan's abilities like predicting movements and using genjutsu. This can make battles he's in much more complex and unpredictable.
A great storyline might involve a fusion of the two worlds' mechanics. For example, the Velvet Room from Persona could have some connection to Joker's world. The Igor-like figure could offer Joker and his friends some new kind of power or knowledge that they use to combat a common foe. Or perhaps the Persona characters learn about Joker's Metaverse Navigator and try to replicate it in their world, which leads to all sorts of unforeseen consequences and adventures.
One interesting plot could be that Naruto awakens the Sharingan during a battle with a powerful new enemy. This unexpected turn gives him new abilities like predicting the enemy's moves better. Another plot might involve Naruto getting the Sharingan in a dream and then slowly learning to use it in the real world. It could also be that Naruto inherits the Sharingan from a long - lost relative, which changes the whole dynamic of his relationships in the ninja world.
One of the most interesting storylines could be the interaction between the different species in Mass Effect and those from Stargate. For example, how would the Asari react to the Goa'uld? The Asari are a long - lived, biotic - using species in Mass Effect, while the Goa'uld are parasitic snake - like beings in Stargate. Another cool idea is the technology exchange. The Mass Effect universe has advanced biotic and cybernetic technology, and Stargate has its own unique wormhole - based travel and Ancient technology. A fanfiction could explore how these technologies might be combined or used against each other. Also, the cultural clashes would be fascinating. The different races in Mass Effect have their own moral and ethical codes, and the same goes for the races in Stargate. How would they deal with each other's values?
A crossover involving a shared enemy. Maybe a new alien race that is a threat to both universes emerges. The combined forces of Babylon 5 and Star Trek would have to pool their resources. The Starfleet officers could share their scientific knowledge to analyze the new threat, while the Babylon 5 personnel could offer their street - smart combat and negotiation skills developed from their own experiences in the often - tumultuous Babylon 5 station.
A really cool storyline might involve a powerful object or spell that links the two shows. For instance, a magical artifact in 'Supernatural' that can also affect the Wesen in 'Grimm'. The characters from both shows would have to race against time to find and control this object before it falls into the wrong hands. It would be a high - stakes adventure that combines the best elements of both shows, like the family - centered themes in 'Supernatural' and the unique fairy - tale inspired world of 'Grimm'.