In a fanfic, Naruto turning into a Pokemon might also lead to some comical situations. Imagine Naruto, now as a Pokemon, trying to communicate with his friends in Konoha. He might have to use Pokemon sounds and gestures at first, causing a lot of confusion among his comrades. But eventually, they figure out a way to understand him, and it becomes a fun adventure for everyone.
One idea could be that Kagome's transformation into a Legendary Pokemon is a result of a strange encounter with a powerful Pokemon artifact in the Pokemon world. Maybe she was exploring an ancient ruin and accidentally activated a spell that merged her with the essence of a Legendary Pokemon, like Mew. This could lead to her having unique powers and abilities that no other trainer has.
A fanfic could explore how Hiccup's transformation into a girl affects his friendships. Astrid might react in a complex way. At first, she could be jealous or confused, but then they could form a stronger bond. Also, Hiccup's father, Stoick, might have a hard time adjusting to his son becoming a daughter, which could add a lot of emotional depth to the story.
One idea could be that Naruto discovers a strange portal that transports him to the Pokemon world. Since he has his ninja skills, he quickly adapts. He might start by befriending Pikachu, as it's one of the most iconic Pokemon. His goal could be to become a Pokemon master, using his determination from being a ninja.
One idea could be that Naruto's greed is for power. He might see all the strong shinobi in the Hidden Leaf and start to envy their abilities, so he becomes greedy for more power. He could start seeking out forbidden jutsu or training methods that are considered dangerous.
In this fanfic, Naruto could be a protector for Grayfia. Since he is her older brother, he would feel responsible for her safety. Naruto's ability to sense danger and his combat skills would be useful in Grayfia's often - dangerous world. Also, their different upbringings could lead to interesting cultural exchanges. Naruto, from a ninja village, and Grayfia, from a magic - based society, could learn a lot from each other's lifestyles and traditions.
Perhaps Mikoto sees Naruto's potential not just as a shinobi, but as a person who can bring about change. She could train him in areas like stealth and intelligence - gathering, skills that are crucial for a ninja. Naruto, with his determination, would quickly pick up on these skills and use them to protect the village in ways he hadn't before.
The story could also focus on Naruto's family life. With Izuna as his grandfather, there might be a different family dynamic. His parents might have had different relationships with the Uchiha clan. This could lead to Naruto growing up with more knowledge about the Uchiha and their importance in the village's history. He could be trained in different ways, perhaps with a combination of Uzumaki and Uchiha techniques from a young age, making him an even more formidable ninja.
Another possibility is Ash becoming Lugia. Lugia is known as the guardian of the seas. As Lugia, Ash could explore the deep oceans, discover new species of Pokemon, and safeguard the marine ecosystem. He could use his psychic and flying abilities to interact with both water - and flying - type Pokemon, bringing a new era of harmony between different Pokemon types.
Another concept could be related to evolution. Just as Pokemon evolve in their natural forms, what if there was a new kind of evolution that turned them into humans? It could be a result of environmental changes or a new type of energy that forces them to adapt in this extreme way. For example, if their natural habitats are being destroyed, they might evolve into a form that can better survive in the human - dominated world.
A really fun Naruto Pokemon fanfic concept would be a story centered around a Pokemon tournament in the Hidden Leaf Village. Naruto and his friends would enter the tournament with their Pokemon partners. They'd have to train their Pokemon in the ways of the ninja, teaching them things like stealth and quick - thinking. And at the same time, the Pokemon would teach the Naruto characters some of their unique skills, like how to communicate with nature better through the Pokemon's connection to it.