The dust in Naruto's body in the fanfic could potentially be a new form of power waiting to be awakened. It could be a dormant element that, once he realizes its potential, will give him an edge in battles. It might be related to the concept of purification too. Maybe he has to go through a process of cleansing the dust from his body, which in turn purifies his chakra and makes him stronger.
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.
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.
One implication is that he becomes even more powerful. Dust Release can be used in various combat situations, so it gives Naruto an edge. For example, he could use it to quickly take out multiple enemies at once.
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.
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.
In fanfiction, the seal on Naruto's heart could imply a hidden power source. It might be something that restricts his abilities until he unlocks it, adding an element of mystery and potential for growth. For example, it could be a seal placed by an ancient clan to protect a powerful chakra reserve that only Naruto can access when he overcomes certain trials.
The implications are quite extensive. Firstly, from a combat perspective, Naruto's fighting style would likely change drastically. He would have to adapt to the unique properties of Dust Release, which could involve different hand signs and chakra control. Secondly, in terms of the overall story, it could shift the focus of the fanfic. Instead of relying on his typical Rasengan or Sage Mode, the plot might revolve more around his new Dust Release ability. This could lead to new alliances and rivalries as other characters react to his newfound power. It also might attract different types of enemies who are interested in either obtaining or countering his Dust Release.
If Naruto has the Bakuton in fanfic, it might lead to new relationships. He could collaborate with characters who are also related to explosive jutsus. Also, it could change the way he is perceived by his enemies. His new power would make him more unpredictable in combat, which might force his foes to come up with new strategies to face him.
One implication is that he becomes extremely powerful. He would be able to see things others can't, predict attacks more accurately, and have a greater variety of combat techniques at his disposal.
One implication could be a change in his power level. Earth Grudge Fear might make Naruto extremely powerful, which could shift the balance in battles and relationships within the fanfic's world.
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.