In a Naruto - is - Frieza fanfiction, it could start with Naruto finding a way to travel to different universes and landing in the Dragon Ball world. He meets Frieza and is fascinated by his power and the way he rules over his minions. Naruto, being the hero he is, might initially try to reason with Frieza, but when that fails, he uses his ninja abilities like Rasengan combined with his new - found knowledge of Frieza's power to take on the tyrant. This would make for an exciting and unique story, mixing the elements of two very different and popular anime.
For this fanfiction concept to work, we have to consider the different power systems. Naruto has chakra, while Frieza has his own alien ki - based powers. If Naruto is a Frieza fan, perhaps he tries to learn from Frieza's way of using power. He might study how Frieza can survive in space and try to adapt some of those abilities to his own ninja skills. This could lead to some really cool battles and character development.
Well, one way it could work is if Naruto somehow enters the Dragon Ball universe. Naruto's skills like his shadow clones could be interestingly pitted against Frieza's power. Maybe Naruto would be initially in awe of Frieza's strength but then find ways to outwit him using his ninja tactics.
Well, one way it could work is by exploring Naruto's sense of justice in the context of Lucifer's world. Naruto is all about friendship and protecting the village, while Lucifer has his own complex view on good and evil. Maybe Naruto could be transported to Lucifer's realm and try to bring his values there, causing a clash or an interesting fusion of ideologies.
Perhaps it could be due to a powerful magic that was misfired or experimented with. Dumbledore could have been involved in some sort of arcane experiment that sent his essence or a part of his magic to the Naruto world. This magic then interacted with a local in the Naruto world, and Naruto was born as a result. In this scenario, Naruto would grow up with a strange mix of ninja training and an inherent magical ability that he doesn't fully understand at first, but as he discovers his connection to Dumbledore, he learns to harness it.
It could work if Jupiter had some connection to the chakra system in Naruto's world. For instance, Jupiter's power could be the origin of a very powerful and rare type of chakra. Naruto, being his son in this fanfiction, would have a natural affinity for this special chakra, allowing him to perform feats that no other ninja could. This would change the power dynamics in the Naruto universe significantly.
Well, one way it could work is if there was some sort of multiverse concept. Maybe in a particular universe, the rules of magic from Harry Potter and the ninja world of Naruto collided. Harry could discover Naruto has a sister through some magical means like a cross - dimensional spell. And then, they could start an adventure together where Harry's magic and the sister's ninja skills complement each other.
Well, one way it could work is if Naruto somehow enters the world of Middle - earth where Smaug exists. Maybe through some kind of magical portal. Naruto's ninja skills like his shadow clone jutsu could be used in interesting ways. For example, he could send clones to distract Smaug while he tries to find a weakness in the dragon's defenses. His speed and agility as a ninja would also give him an edge in combat against the huge and somewhat lumbering Smaug.
It could work if we consider the power systems. The Matrix has the power of the One, who can manipulate the code of the Matrix. In Naruto, there are jinchuriki like Naruto who have great power. If Naruto were to enter the Matrix, his chakra and the Nine - Tails' power could potentially interact with the Matrix's code. He might be able to break through the digital barriers or even rewrite parts of the Matrix code with his chakra, just like how he can use his chakra to perform powerful jutsu in his own world.
Well, it could work by having a magical or technological portal that connects their two worlds. Jinx could be curious and step through it into the Naruto world. Then, the story could revolve around the culture shock for Jinx and how the Naruto characters react to her strange appearance and explosive devices.
Well, Naruto leading bandits could be an interesting twist. Maybe he's been brainwashed somehow. He could use his ninja skills to lead them in a different way than typical bandits. For example, instead of stealing for greed, they could be stealing from the rich to give to the poor, like a ninja Robin Hood situation.
Well, one way it could work is if Naruto's world somehow got merged with the dark and chaotic world of the Joker. Maybe Naruto, after facing so much pain and loss in his own world, starts to adopt the Joker's nihilistic views. He could use his ninja skills in a more unhinged way, like the Joker uses his chaos-creating abilities.
Well, a Naruto and Little Mermaid fanfiction could work in several ways. One idea is that Naruto could be transported to the underwater world of the Little Mermaid. He might use his ninja skills to adapt, like using his chakra to swim faster or create air bubbles to breathe. Maybe he could even teach the mermaids some ninja techniques in return for their help in finding a way back home.