Naruto's ability to use chakra and perform ninjutsu would be quite different in the One Piece world. His Rasengan might be modified to incorporate elements of the sea, like sea - salt infused Rasengan to deal more damage to devil - fruit users. Kushina's chakra chains could be enhanced with sea - prism stone properties, making them more effective against Logia - type devil - fruit users.
Well, Naruto's chakra - based abilities would be quite unique in the One Piece world. His Rasengan, for instance, would be a powerful new type of attack that most characters in One Piece haven't seen. His ability to walk on walls and water using chakra would also give him an edge in many situations. He might also be able to use his chakra to sense things in a different way than the Haki users in One Piece, which could be a big advantage when exploring islands or looking for hidden treasures.
Naruto's ability to create shadow clones would be extremely useful in the One Piece world. He could send clones to gather information across different islands while he and the Straw Hats are on their main journey. His Rasengan, being a powerful concentrated attack, could be used against tough enemies like the Yonko's commanders. And his immortality means he can keep using these abilities without the fear of death, making him a very formidable ally in the One Piece universe.
Naruto's Rasengan could be seen as a super - powerful attack similar to some of the advanced Haki techniques in One Piece. His ability to create shadow clones would be a huge advantage in battles and also for things like scouting or distractions. His chakra control could potentially be related to Haki control as well. And his immortality would make him a very unique and feared presence in the One Piece world, as most characters there are not immortal.
Naruto's Rasengan could be used in a similar way as some of the physical attacks in One Piece. For example, it could be as powerful as Luffy's Gear attacks. Also, his ability to jump great heights and distances might be on par with some of the Zoan Devil Fruit users' enhanced physical abilities.
Naruto would become more confident in his abilities. With Kushina's training, he would have a better understanding of his Uzumaki heritage and the power that comes with it. This new - found confidence would show in his battles and his interactions with others.
His chakra powers might be affected by the different energy in the One Piece world. Maybe his Rasengan would have a different look or effect. And his ability to sense chakra could turn into something like sensing the presence of Devil Fruits or Haki. His shadow clones could be used in new and creative ways, like scouting in the vast ocean or exploring uncharted islands.
The Rinnegan's ability to manipulate gravity (Deva Path) could be used in the One Piece universe in interesting ways. For instance, a character with the Rinnegan could create artificial islands or even reverse the flow of waterfalls on certain islands. This would be a huge advantage in a world where controlling the environment can be crucial in battles and exploration.
His water - based jutsu might improve. Since Kiri is known for its water ninjutsu, Naruto could learn new techniques or modify his existing ones. For example, he could combine his Rasengan with water chakra to create a more powerful and water - enhanced attack.
In a Themiscyra fanfiction, Naruto's shadow clone jutsu could have an interesting transformation. Maybe the clones could take on some Amazonian characteristics, like their armor or weapons. His rasengan could also be modified. For instance, it could be charged with the magic energy of Themiscyra, making it not only a powerful physical attack but also having some sort of magical effect, like being able to dispel dark magic or heal minor wounds in addition to causing damage.
Carrot's moon form in One Piece gives her enhanced strength and speed. If combined with Naruto's Rasengan, they could create a super - powerful attack. Imagine Carrot in her moon form, spinning like a tornado while Naruto channels his chakra into a Rasengan in the center of that tornado - like motion. It would be a devastating combination.