In such a fanfic, it might change the power dynamics in the Hidden Leaf. Since Naruto was born before the Kyuubi attack, the village might not be as on - edge about security in relation to him. Also, Naruto might not have the same drive to prove himself as in the original story, because he wouldn't have been shunned from the beginning. This could lead to different relationships with his peers like Sasuke and Sakura.
One implication could be that Naruto's life might have been more normal at first. Without the immediate post - Kyuubi attack chaos and the villagers' fear and hatred towards him from the start. His parents might have had more time to be with him, and he could have grown up with a more stable family environment, which would have likely affected his personality development in a positive way.
The overall story arc would shift. In the original, the Kyuubi attack was a huge event that shaped Naruto's life and the village's future. If he was born before that, the village might not be as focused on security against the Kyuubi. Naruto's training might also be different. He might not have to struggle as much to gain recognition, so his training could be more traditional and less about proving himself. This could lead to different ninja skills and abilities compared to the original Naruto.
Well, one possible plot could be that Naruto's mini Kyuubi form is initially out of control. He might accidentally attack the village when he was a child. But then, through the help of Iruka and Kakashi, he starts to learn to control this power. They teach him chakra control techniques specifically designed for his unique situation.
The main antagonists could be the villagers who fear Naruto's mini Kyuubi form and try to drive him out of the village. Their prejudice and fear act as a major obstacle for Naruto, who just wants to be accepted.
Well, it could change a lot. For one, Naruto might grow up with his parents. This would mean he'd have a completely different upbringing. He could be trained by his father, Minato, from an early age, perhaps learning all kinds of advanced jutsu. His relationship with the village would also be different. Instead of being an outcast, he might be seen as a hero's son, and be respected right from the start.
Iruka could still be an important ally. Even though Naruto's situation is different, Iruka would probably be drawn to his positive attitude. And the Third Hokage would also be on his side. He was always looking out for Naruto in the original story, and that would likely continue. Plus, any of the ninja who were friends with Minato would probably be friendly towards Naruto as well.
One implication is that Naruto could have even greater power potential. Since the Kyuubi is extremely powerful, being its descendant might mean Naruto has latent abilities that are far beyond what was shown in the original story. Another is that it could change his relationships. People might fear or revere him more depending on their views of the Kyuubi.
One implication could be a different power dynamic. Naruto would have an even stronger connection to the Kyuubi's power. He might also face different kinds of discrimination or fear from the villagers as being related to the Kyuubi.
One implication is that his power levels would be off the charts. Since the Kyuubi is an extremely powerful entity, Naruto would have a whole new set of abilities.
No. In the Naruto series, Naruto is the host of the Kyuubi, not its slave. Fanfics might deviate from the original concept, but in the official story, Naruto has a symbiotic relationship with the Kyuubi. He gains power from it and eventually befriends the Kyuubi spirit.
If Naruto is Kyuubi's son in fanfiction, it could mean that Naruto has some innate powers directly related to the Kyuubi. He might not need to struggle as much to control the Kyuubi's power as in the original story.