In this kind of fanfiction, it could lead to some really interesting power dynamics. Naruto might gain new abilities or have a different understanding of his powers at a younger age. Maybe he could use the power of the Juubi to protect the village in ways he couldn't before in the original story.
In fanfiction, this concept would have a huge impact. Naruto's growth would be different. He would have to deal with the power of the Juubi at a time when he is still developing his own identity. This could lead to a different Naruto, one who is more mature in some ways and yet still retains his naivete in others. The story could also explore how the village and its people react to this new Naruto. Some might fear him, while others might see him as a new hope. And in battles, Naruto could potentially defeat enemies much quicker, which would change the overall plot of the Naruto universe in fanfiction.
Well, it could be that Deku's younger self is initially in awe of his future self. They might start training together, with the older Deku showing the younger one new moves and ways to improve his skills. Also, the older Deku could tell stories about his battles and how he overcame various villains, which would give the younger Deku more confidence.
One possible theme is self - discovery. The older Deku has already gone through a lot of growth, and by meeting his younger self, he can see how far he has come. The younger Deku can also start to understand his potential better.
At first, Naruto could be a bit skeptical. He might think it's some kind of trick or illusion. But once he realizes it's really his future self, he would be excited. He would want to know about his future family, if he has one. He'd also be interested in the state of the ninja world in the future. His reaction would be a mix of excitement, curiosity, and a determination to make sure his future turns out as good as his future self's seems to be.
One interesting scenario in 'naruto meets his future self fanfiction' could be that Naruto's future self has a completely different appearance or set of abilities due to some unforeseen events in the future. This could shock the present Naruto and make him more curious about what the future holds. His future self could also share some secrets about the hidden powers within him that he hasn't discovered yet, leading to a whole new journey of self - discovery for the current Naruto.
One idea for a fanfiction could be that Naruto finds out his parents were actually not as heroic as he thought. This shatters his self - esteem as his whole identity was built on the idea of living up to their reputations. He starts to question everything he does and whether he is worthy of being their son at all. This could lead to a journey of self - discovery where he has to re - build his self - esteem from the ground up.
His presence could completely rewrite the history of the Hidden Leaf Village. For example, if he manages to prevent the Nine - Tails attack, it would mean that many of the characters' backstories would change. People like Sasuke, who was also affected by the events related to the Nine - Tails, might have a different path.
Another thing that could happen is that Naruto would change the relationships in the village. He could start to influence the older generation, like the Third Hokage, at a very young age. He might tell them about the future threats and get them to start preparing earlier, which would change the whole dynamic of the village.
His relationship with Sasuke would be very different. In the new dimension, Sasuke might not have the same vendetta against his brother. So Naruto wouldn't have to worry about Sasuke going off the rails. With Sakura, she could be a powerful ninja in a different way, like she might be more focused on medical ninjutsu and Naruto would see her in a new light. And his relationship with Kakashi could change too. Maybe Kakashi is a strict military - like leader in the other dimension instead of a laid - back teacher.