Perhaps a plot where Fem Kyuubi is in danger, and Fem Naruto has to protect her. This could be a complete role - reversal from the original Naruto story. As Fem Naruto protects Fem Kyuubi, she has to face powerful foes who want to capture the Kyuubi for their own evil purposes. This would show a different side of Naruto's courage and loyalty, and also how their relationship has evolved in this fanfiction scenario.
A plot could be that Fem Naruto and Fem Kyuubi have to go on a journey to find a special artifact. Along the way, they face various enemies and obstacles. They rely on each other's skills, with Naruto using her ninja techniques and Kyuubi her powerful chakra. This journey could also be a self - discovery for both of them, learning more about their true selves and their place in the world.
One more plot could be that Fem Naruto and Fem Kyuubi are transported to a different dimension. In this new dimension, they have to find a way back home while also dealing with the strange and new rules and threats of this dimension. They might meet new allies and enemies, and their bond would be tested as they try to survive and return to their own world.
It could also be for revenge. Naruto might have unknowingly done something that offended fem Kyuubi in the context of this fanfiction. For example, he could have disrupted her plans or made an enemy of someone she cared about. So, trapping him in a henge is her way of getting back at him.
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.
One interesting plot could be Naruto forming a unique bond with Fem Amaterasu and Fem Kyuubi. For example, Fem Amaterasu might use her powers to help Naruto in battles in a different way than in the original story. Maybe she can create special fire-based defenses or attacks that complement Naruto's skills. And Fem Kyuubi could have a more nurturing side, guiding Naruto not just with power but also with wisdom. They could all team up to face a new and powerful enemy that neither Naruto alone nor his usual allies could handle easily.
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.
Another motive might be jealousy. Suppose Naruto has something that the fem Kyuubi desires, like the love and respect of the people in the village. In that case, she could torture him out of envy, trying to make him lose those things that she covets so much.
One possible plotline could be that fem Naruto has to learn to control the Kyuubi's power in a different way than in the original series. Since she's female, her approach might be more empathetic, and the story could focus on how she forms a deeper connection with the Kyuubi because of this.
One possible plot could be Naruto gradually realizing his feelings for Fem Kyuubi as they go through various adventures together. Maybe they start off as friends but as they face more and more challenges, like fighting powerful enemies, their bond deepens into love.
In some fanfictions, a possible plot is that Fem Naruto uses her femininity to her advantage when dealing with the Kyuubi. She could charm or trick the Kyuubi in some way that Naruto in the original couldn't. Like, she might offer the Kyuubi something it really wants in exchange for its power, but in a more cunning way.
A great plot could be that Fem Naruto wearing the Kyuubi attracts the attention of other villages. They see her as a potential threat or an opportunity. This could lead to diplomatic tensions. Meanwhile, within her own village, she has to deal with the elders who are worried about her newfound power and how it might disrupt the balance. But Fem Naruto, with the Kyuubi's power, is determined to prove that she can use it for the greater good. She might start training with new mentors who understand the Kyuubi better, and through her training, she unlocks even more hidden abilities.
A possible plot is that the Fem Nibi and Fem Kyuubi are reincarnated in human forms and they meet Naruto by chance. They initially don't remember their past as tailed beasts but feel a strange connection to Naruto. As they start to regain their memories, they discover that they have a shared destiny with Naruto to save the ninja world from a dark prophecy. Along the way, they have to overcome their own differences and learn to work together, all while Naruto is trying to figure out his feelings for these two unique characters.