Well, in a Naruto can summon Pokemon fanfiction, it could work if there was some sort of cross - dimensional magic. Maybe Naruto discovers a hidden jutsu that allows him to open portals to the Pokemon world. Then he could start summoning Pokemon based on his chakra and willpower. For example, he might summon Pikachu if he needed a quick burst of electricity in a battle.
One way it could function is if the Pokemon world and the Naruto world had some ancient connection. The summonings could be a revival of an old pact. Naruto, being the protagonist, might accidentally stumble upon a scroll or a relic that gives him the ability to summon Pokemon. He could then use Pokemon like Charizard for aerial attacks during his missions, which would be really cool.
Definitely Pikachu. Since Naruto is often in need of a quick and agile ally, Pikachu's speed and electric attacks would be very useful. Plus, Pikachu's cute appearance but powerful abilities would create an interesting contrast with Naruto's ninja style.
For Naruto to marry Grayfia, the story could start with a prophecy. A prophecy that foretells of a union between two powerful beings from different realms. Naruto, always one to face challenges head - on, and Grayfia, who is used to dealing with complex situations in her own world, would be brought together by this prophecy. They would initially be skeptical but as they get to know each other better, they find that they are a perfect match and decide to marry.
Well, in this fanfiction scenario, Naruto joining Whitebeard's crew might start with some sort of interdimensional rift. Naruto, being the adaptable character he is, would quickly pick up on the ways of the pirate world. His ability to make friends easily would help him bond with the crew members. And his Rasengan could be a powerful attack against their enemies. Maybe he'd even learn some Haki from the crewmates while teaching them a bit about chakra in return.
One way the storyline could work is by having Naruto's unique ninja abilities incorporated into the Star Wars universe. For example, his ability to use chakra could be seen as a new form of Force power. The Mandalorian, known for his combat skills and code, could team up with Naruto. Maybe Naruto is a lost Jedi - like figure in the Star Wars galaxy, and the Mandalorian helps him understand the ways of this new world while Naruto teaches him some ninja tricks.
Naruto's character could develop a new sense of curiosity. Summoning Pokemon would expose him to a whole new world of creatures and powers. He might become more adaptable as he has to learn how to work with Pokemon, which have different personalities and abilities compared to the summons he's used to in his own world.
He could summon different kinds of tigers. Maybe there are snow tigers for cold environments. These tigers would be white - furred and well - adapted to snowy areas. They could be used in missions in the Land of Snow.
One way could be by having Naruto's ninja skills translate into the GTA 5 world. For example, his ability to run fast and jump high could be like a special ability in the game. He could use his shadow clone jutsu to confuse enemies during heists or missions. Maybe he'd team up with some of the GTA 5 characters and teach them his ninja ways. This would add a whole new dynamic to the GTA 5 gameplay and story.
Well, in such a fanfiction, Naruto being a Kryptonian would mean he has heat vision. This new power could be used in battles against the Akatsuki. Instead of using Rasengan, he could simply use his heat vision to take out opponents. Also, his invulnerability would make him a force to be reckoned with. He could walk through most attacks without a scratch. His character might also change as he has to deal with these new powers and the responsibility that comes with them. It's an interesting concept that would mix the Naruto world with the Kryptonian lore.
It could also be a story where a trainer is born into a family with a dark past in the Pokemon world. Despite this, they strive to change their family's reputation. They start by training underdog Pokemon and gradually build a team that is strong enough to take on the toughest opponents. Their journey of self - discovery and growth is what makes them a legend.
One way it could work is through some sort of time - travel or alternate reality scenario. Maybe in a different dimension, Steve Rogers had a relationship that led to having Hermione as his daughter. Another possibility is that magic was involved, perhaps some kind of spell that connected their two worlds in an unexpected way. It could also be a result of a genetic experiment gone wrong or right, depending on how you look at it, that combined the DNA of Steve Rogers and someone in the wizarding world to create Hermione.