Power and love is a common theme. Since Naruto is godlike, his power plays a role in the relationship. The female Kyuubi is also powerful. Their love often overcomes the differences in power levels. Another theme is acceptance. Naruto has to accept the female Kyuubi as she is, and vice versa.
There is a fanfic named 'The Godlike Naruto and His Female Kyuubi Love'. In it, Naruto's godlike abilities make him stand out. The female Kyuubi is often depicted as a strong - willed character. Their romance develops as Naruto helps the female Kyuubi to understand the human world better. They learn to care for each other in the process of protecting the village from external threats.
Well, in such a fanfiction, it might be that Naruto becomes extremely powerful like a god. Since he is trained by the Kyuubi, he could gain unique powers and abilities. Maybe he masters the Kyuubi's chakra in ways no one else has. He could use this power to defeat powerful enemies, protect his village in extraordinary ways, and perhaps change the entire shinobi world with his new - found god - like strength.
Yes, there are likely fanfictions with such a concept. The idea of a 'godlike' Naruto trained by the female Kyuubi is an interesting and popular concept in the Naruto fanfiction community. It allows for unique storylines and character developments.
The power aspect. When Naruto is godlike with the Kyuubi, it means he can do things that are way beyond his normal capabilities in the original series. It's exciting to see him overpower his enemies.
One popular 'godlike kyuubi naruto fanfiction' is 'Naruto: Kyuubi's Ascension'. It shows Naruto with an even more powerful connection to the Kyuubi, leading to some really exciting battles and character developments.
The main character is Naruto without a doubt. He is the one on the path to becoming god - like through the Kyuubi's training. The Kyuubi is another key character. It has a vast amount of knowledge and power, and it imparts this to Naruto. Additionally, characters like Jiraiya could be important. Since Jiraiya was Naruto's mentor in the original story, he might play a role in this fanfiction too, perhaps guiding Naruto in a different way in combination with the Kyuubi's training. And then there are Naruto's friends. Sakura could be there to support Naruto or be in awe of his new powers. Sasuke might be an interesting character as he could be Naruto's rival, either trying to catch up to his power or oppose him if their paths diverge due to Naruto's god - like transformation.
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.
Their relationship might start with Naruto being curious about the fem Kyuubi. He's used to the regular Kyuubi, but this new, female form is different. As he gets to know her, he discovers she has a softer side. And she, in turn, starts to see Naruto not as just a powerful being but as someone with a kind heart.
Yes, there are some. You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. Just search for the specific tags 'godlike naruto' and 'fem kyuubi harem' and you'll likely find some interesting works.