Well, he might find himself in a world with completely different chakra rules. Maybe in this new world, his ninja skills are either overpowered or nearly useless. He could meet new characters that are similar to his friends in Konoha but with different personalities. For example, he might find a version of Sasuke who is more friendly from the start.
Naruto could become more curious. A different world means new things to explore, new cultures, and new powers. He would be eager to learn about everything, which could make him seem more inquisitive than he already is. He might start asking a lot of questions to understand how this new world functions.
He may find that his ninja skills are either very useful or completely ineffective in the new world. If the new world has a different form of combat, Naruto would have to adapt quickly. Also, he could encounter new forms of nature energy or magic that he has to learn to control. There might be a love interest for Naruto in this new world as well, which could add a whole new layer of complexity to the story.
Naruto would probably be really confused at first in the Pokemon world. But then he'd start to explore. He might mistake a Pokeball for some kind of ninja tool at first. However, once he figures out how things work, he could become a really strong Pokemon trainer. His determination, which is one of his main traits in his own story, would help him a great deal in this new world. He would not give up easily when it comes to training his Pokemon or facing tough opponents in Pokemon battles.
Well, he might start by being really confused. The Devil Fruits would be so strange to him compared to chakra. He could probably make friends with Luffy easily though, since they both have that adventurous spirit. And his ninja skills could come in handy when fighting pirates. Maybe he'd teach some of the Straw Hats some cool ninja moves.
Well, Naruto might be really surprised at first. He could find that the fighting styles are different as they are designed by females. Maybe he would have to adapt to new social rules and ways of communication. For example, he might need to be more polite in a different way than he is used to in his own world.
Well, he could expect adventures that test his limits. Maybe in this different dimension, there are no villages and ninjas are more like lone wolves. Naruto would have to learn to survive in this new environment where the rules are different. He might also find that his reputation as a hero in his own world means nothing here, and he has to prove himself all over again. This could lead to him having to fight for respect and to make new friends. And of course, there could be new and strange creatures that he has to either fight or befriend.
Naruto's powers in the Digimon world would be quite different. His chakra, which is a form of energy in his own world, would likely interact with the digital energy of the Digimon world. His Rasengan, which is a concentrated ball of chakra, might be able to disrupt the digital code of some Digimon. Also, his ability to sense chakra could be transformed into a way to detect the different levels of digital energy in the Digimon. His ninjutsu, which are based on hand signs and chakra control, could be combined with the unique abilities of the Digimon he teams up with, creating new and powerful combos. For instance, if he teams up with a fire - type Digimon, his fire - based ninjutsu could be amplified.
One common theme is self - discovery. Naruto often discovers new aspects of himself in these different worlds while falling in love. Another is the clash of cultures. Since he's in a different world, his ninja culture clashes and also blends with the new world's culture, which is often part of the romantic build - up.