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.
In a 'Naruto born as mini Kyuubi attack' fanfiction, the plot could revolve around the Hidden Leaf Village initially seeing Naruto as a threat due to his mini Kyuubi form. But Naruto, with his kind heart, doesn't want to harm anyone. He embarks on a journey to find a way to suppress the violent tendencies of the mini Kyuubi. Along the way, he meets a hermit who knew about an ancient sealing technique that could help him. With this new knowledge, he tries to balance his human side and the power of the mini Kyuubi.
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 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.
If Naruto becomes a mini Kyuubi in the fanfiction, it would be a huge change for him. He'd have to deal with new instincts that come with being part - Kyuubi. He might be more aggressive at times, but he'd have to learn to control that. His relationship with the other villagers could also change. Some might be more accepting since he's using the Kyuubi's power for good, while others might still be afraid. And his training would be different. He'd have to focus on mastering his new form and powers, which could involve some really cool new jutsu and fighting styles.
Well, he might face some challenges too. Other characters might be afraid or suspicious of his new form. They could mistake him for a threat, like when he first had the Kyuubi inside him. Also, Naruto would have to learn how to control this new mini Kyuubi form. It could be difficult as the Kyuubi's power is wild. But if he manages to control it, he could use it to protect the village in new and unexpected ways.
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.
One possible plot could be that Naruto, instead of being shunned in the village, is secretly taken in by the Kyuubi. The Kyuubi, seeing Naruto's loneliness, decides to raise him. Naruto would grow up learning unique skills from the Kyuubi, like advanced chakra control and perhaps some secret fox - related jutsu. This would make him a very different kind of ninja compared to the original Naruto in the series.
Well, one possibility could be a very creative and out - of - the - box plot where Naruto's unique bond with the Kyuubi leads to some sort of magical or spiritual connection that results in an unexpected pregnancy. But this is a very strange and far - fetched concept in the Naruto universe as it goes against the normal biological and story elements.
The plot of a 'naruto frees kyuubi fanfiction' might involve an external threat to the village. This threat is so great that Naruto realizes he needs the full power of the Kyuubi, not just the limited access he has through the seal. So, he starts to work on breaking the seal. Along the way, he has to face opposition from some in the village who fear the unleashed Kyuubi. But Naruto is determined. He finally frees the Kyuubi and together they defeat the external threat. After that, the Kyuubi decides to stay with Naruto as a friend and ally, seeing the true nature of the young ninja.