In some fanfictions, Minato could be Naruto's father in the context of the Kyuubi. Since Minato was Naruto's actual father in the original series and the Kyuubi was sealed within Naruto by Minato. So many fanfictions might expand on their relationship within the framework of the Kyuubi's presence.
There are a few. In some of these fanfictions, the idea of Kyuubi being Naruto's father leads to some unique plot twists. It might make Naruto more conflicted about using the Kyuubi's power. And it can also create some interesting interactions with other characters like Sasuke. They might react differently to Naruto if they knew about his true parentage.
The themes often include self - discovery. Naruto has to discover a whole new side of himself. Redemption can also be a theme, especially if the Kyuubi has some sort of past misdeeds. And there's the theme of connection. Naruto's connection to the Kyuubi is no longer just that of a host and a beast, but a father - son relationship, which changes how he relates to the power within him.
In this fanfiction, it might be about the idea of Naruto being the father of the Nine - Tails. It could explore a whole new plot where Naruto has some sort of special connection or relationship with the Kyuubi that goes beyond what is in the original series. Maybe it delves into how he came to be in such a role and the implications it has on the Naruto universe.
One common theme is the exploration of Naruto's heritage. With the focus on his father in relation to the Kyuubi, it often delves into how his father's actions regarding the Kyuubi have shaped Naruto's life. For example, if his father made some sort of deal with the Kyuubi to protect the village and Naruto was an unintended consequence.
Naruto is surely the central figure in this fanfiction as it's about his role as the father of the Kyuubi. The Kyuubi is essential as well. Additionally, characters like Jiraiya might be included. Jiraiya could play a role in guiding Naruto in this new aspect of his life, considering his relationship with Naruto in the original series. Other characters such as the Hokages could also be involved, maybe to give their perspective on this extraordinary situation.
In some fanfictions, Naruto's mother, Kushina, has a special connection with the Kyuubi. For example, some stories might explore how Kushina's chakra influenced the Kyuubi's behavior. Since she was the Jinchuriki before Naruto, her relationship with the Kyuubi could be a rich source of plot development in fanfiction.
Maybe through some kind of special training or a unique ritual. It could be that he discovers a hidden method within the ancient scrolls of his village.
Kyuubi's comfort can make Naruto more confident. Knowing that he has Kyuubi's support, he may take on more difficult missions without hesitation. For instance, if he's facing a powerful enemy, he'll remember Kyuubi's words of encouragement and stand his ground firmly.
At first, Naruto might see the Kyuubi as just a source of power. But as he starts to protect it, he realizes it's more of a partner. Their relationship evolves from a simple user - power source dynamic to a deep - seated friendship. He begins to understand the Kyuubi's emotions and past, which further cements their bond.