One common theme is the power struggle. Since Kyuubi and Shukaku are powerful entities in Naruto, when they are in female forms in fanfiction, their power and how they interact with other characters in terms of power dynamics can be a big theme. For example, they might have to fight against villains who want to use their power.
One possible fanfiction could be about the female Kyuubi and female Shukaku forming an unlikely alliance. Maybe they team up to help Gaara and Naruto in a battle against a common enemy from the FF7 universe. It could explore how their unique powers interact in this crossover scenario.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. These platforms have a wide variety of fanfictions, and you can use the search function to look specifically for stories related to Naruto, FF7, female versions of Kyuubi and Shukaku. Just type in relevant keywords and browse through the results.
A simple fanfiction could be that the female Kyuubi and female Shukaku start to communicate telepathically across different worlds. They realize they have more in common than they thought and decide to help each other. The female Kyuubi could offer some of her power to help the female Shukaku control her more chaotic tendencies, which in turn benefits Gaara.
One plot idea could be a crossover where the female Kyuubi and female Shukaku are somehow transported to the FF7 world. They could team up with the FF7 characters to fight a common enemy, perhaps a new threat created by a combination of Naruto -verse and FF7 -verse magic or technology.
Another option is to join Naruto or FF7 fan communities on social media platforms like Reddit or Facebook. There, you can ask other fans if they know of any good fanfictions involving these elements. They may be able to recommend some hidden gems that you wouldn't find through a simple search.
There could be a fanfiction where Fem Naruto discovers a hidden side of Fem Kyuubi. Maybe Fem Kyuubi has some memories or powers that were locked away and Fem Naruto helps her unlock them. This could set off a chain of events that not only changes the relationship between them but also has a major impact on the entire ninja world as they face new threats and opportunities together.
I really liked 'Fem Kyuubi's Bond with Naruto'. In this fanfic, the fem Kyuubi forms a deep emotional bond with Naruto. The author does a great job of showing how they support each other through various challenges. It has some really cool fight scenes where the fem Kyuubi's unique abilities are shown, which makes for an exciting read.
One great fem Naruto x fem Kyuubi fanfiction could be one that focuses on their unique bond. It might explore how they interact in a world where Naruto is female and the Kyuubi also takes a female form. For example, it could show them teaming up against common enemies and how their combined powers are different from the original story.
In this type of fanfiction, the fem Kyuubi's possessiveness might be manifested in her protecting Naruto at all costs. She could be overly vigilant and not allow any harm to come near him. This could lead to her interfering in battles or situations where Naruto might be in danger, even if he doesn't necessarily need her help all the time. She may also try to monopolize his time, not wanting him to go on missions with other people or make new friends. Her possessiveness could also be expressed in a more emotional way, like getting sulky or angry when Naruto doesn't pay enough attention to her.