Perhaps the story focuses on how Kyuubi's actions not only changed Naruto physically but also his view on relationships. In the yaoi aspect, Naruto could be in a love triangle with two other male characters. His werefox form might give him certain allures that draw these characters to him, and he has to navigate through this new world of emotions and attractions.
The plot might involve Naruto being ostracized by some in the village due to his werefox transformation, but finding acceptance and love in an unexpected yaoi relationship. He could meet a new character who is attracted to his unique form and they start to develop a deep connection. This new relationship could help Naruto come to terms with his new identity and powers.
Naruto's character would likely become more complex. His new werefox form might make him more instinctual, which could conflict with his normal, more optimistic self. In the yaoi context, if he enters into a relationship, he might become more vulnerable and open, as he explores new emotional territories.
Perhaps the fanfiction could focus on the backstory of how the 'fem Kyuubi' came to be. It could be related to some ancient ninja magic or a long - forgotten experiment. Naruto would then be at the center of uncovering this mystery while also dealing with the power and influence of the 'fem Kyuubi' within him. This could lead to new alliances and rivalries within the ninja world as different factions have different views on this new development.
Well, if Kyuubi turned Naruto into an Ino fan, it could change the dynamics a lot. Naruto might start spending more time around Ino. He could be influenced by her skills in mind - related jutsu, and perhaps try to learn from her. This could lead to new storylines where Naruto and Ino form an unexpected alliance or friendship. It would also be interesting to see how Naruto's friends like Sasuke and Sakura react to this sudden change in his behavior.
In such a fanfiction, the plot could involve Naruto's transformation causing chaos in the village at first. People who knew Naruto as a boy are now confused. But Naruto (as a girl) is determined to show that she's still the same person inside. She might start wearing different clothes that are more feminine but still keep her ninja gear. Her sensei, like Kakashi, would have to adjust to training a female Naruto, and there could be some humorous moments in their training sessions as Kakashi tries to be more sensitive to her new situation.
One possible plot could be that Naruto's friends initially don't recognize him. Then Naruto has to find a way to communicate with them while in fox form. He might discover new abilities that come with being a fox, like enhanced speed or senses, and use these to his advantage in battles or to solve problems in the Hidden Leaf Village.
I haven't heard of a fanfiction where Kyuubi turns Naruto into a futa. Naruto fanfiction often focuses on things like character development, new adventures, or different power - up scenarios. This concept is rather unorthodox and might not be as common as more mainstream fanfiction ideas. It's possible that it exists in some corner of the vast fanfiction universe, but it would take some serious searching to find it.
One possibility is that Naruto's upbringing by the kitsune gives him a different set of skills and values. He might be more in tune with nature and have a more mysterious aura. With the fem Kyuubi aspect, perhaps there could be a unique relationship where the fem Kyuubi acts as a guide or protector. It could also lead to Naruto having a different view of his own power and the power of the tailed beasts.
One possibility is that Naruto, filled with hatred, forms an unexpected bond with the female Kyuubi. Maybe the story could explore how they deal with Naruto's inner demons together. The fem Kyuubi might offer a different perspective on Naruto's struggle and help him find a way to overcome his hatred.
Well, one possibility is that it could explore how the fem Kyuubi's new role as Naruto's mother would change Naruto's upbringing. Maybe she would use her powerful chakra to protect Naruto in ways that Kushina couldn't. For example, she could teach Naruto some unique jutsu that are related to her own nature as the Kyuubi. Also, it could show how the relationship between Naruto and the other villagers would be different. Since the Kyuubi is now in a maternal role, perhaps the villagers would be more accepting of Naruto earlier on.
Common themes in 'Tails turns into a werefox' fanfiction include adaptation. Tails has to adapt to his new physical form and the abilities that come with it. There may be a theme of isolation as well. If people are afraid of his werefox form, he could end up isolated from society. And then there's the theme of self - discovery. As he experiences life as a werefox, he discovers new aspects of himself, both good and bad, that he may not have known when he was just his normal fox self.