In fanfic, if Naruto has dust in his body, it could symbolize a lot of things. Maybe it represents the wear and tear of his battles, like the physical toll his ninja fights have taken on him. It could also be a sign of some kind of curse or strange magic that has latched onto him. For example, it might be related to a new enemy's jutsu that leaves behind this 'dust' as a way to slowly weaken him over time.
In a fanfic where Naruto has dust in his body, it could symbolize a lot of things. Maybe it represents the wear and tear he has endured from his battles. The dust could be like the remnants of all the places he has fought in, carrying the essence of those battlefields. It could also be a sign of his connection to the earth, perhaps as a new form of chakra or power related to the ground itself.
One way to develop this concept is to make the dust a part of a new origin story for Naruto. For instance, he could have been exposed to a special dust during a hidden mission in his childhood that has been slowly affecting him over time. Another way is to tie it to his relationships. Maybe his friends notice the dust in his body and try to help him get rid of it, which could lead to a series of adventures.
If Naruto has dust in his body in a fanfic, his abilities might be affected in different ways. For instance, the dust could clog his chakra pathways, making it harder for him to perform jutsu. Or, if the dust has some sort of energy of its own, it could interact with his chakra and create new and unexpected effects. Maybe he could learn to use the dust as a weapon, like shooting it out as a projectile or using it to blind his opponents.
He might face some initial instability. His body could reject the changes at first, leading to things like loss of control over his movements or chakra.
He could enhance his physical strength by focusing chakra into his muscles. For example, like how he does with the Rasengan, but on a more internal level to boost his natural power.
For his male friends like Shikamaru and Choji, they might initially be a bit awkward around Naruto. But as time passes, they would adapt and might start to treat him more like one of the girls in their group. Naruto's relationship with the older male ninjas like Jiraiya could also change drastically. Jiraiya might not be able to train Naruto in the same way as before and might have to come up with new training methods that are more suitable for Naruto's new form. Naruto's friendships with female characters like Ino could also transform. Ino might take Naruto under her wing and teach him things like how to do proper makeup or how to style his hair in the ninja world.
It would likely make his fighting style more versatile. Dust Release allows for long - range attacks and the ability to disintegrate objects. So Naruto could add this to his arsenal of jutsus, attacking from a distance before closing in with his signature Rasengan. He might also use it to create diversions during battles.
In fanfic, the Naruto robot body can have a significant impact on his relationships. His friends might initially be shocked or even a bit distant. For example, Sakura might be hesitant to get close to him at first because he seems so different now. However, as time passes, they could come to accept and even admire his new form. His enemies, on the other hand, might see him as an even greater threat. They would have to adjust their strategies when facing a Naruto with a robot body that has enhanced abilities. Some might be more cautious, while others might be more aggressive in trying to destroy this new and powerful version of Naruto.
Naruto might need to focus his chakra in a different way. By using chakra control, he could regulate the sharpness and pointiness of his body. For example, he could make some parts less sharp when he needs to interact with his friends or allies.