Communication is key. In the fanfiction, Naruto could start talking to the Kyuubi more often, not just as a source of power but as an equal. Since Naruto is in his futa form, there could be a different kind of dynamic. Maybe Naruto shares his feelings about being different in the village, and the Kyuubi shares its own long - held grudges. This exchange of emotions can deepen their relationship.
The relationship can be developed by exploring their mutual needs. The Kyuubi needs freedom in a sense, and Naruto in his futa form may be able to offer a different perspective on that. Naruto, on the other hand, needs power to protect his loved ones. The Kyuubi can provide that. As they work towards fulfilling each other's needs in a more symbiotic way, their relationship can develop into a strong and complex one.
The relationship can be developed through shared experiences. For example, when they face a common enemy together. During battles, they can learn to trust each other's instincts and powers. Naruto's futa form might have some unique abilities that complement the Kyuubi's power, and as they use these in unison, their bond grows.
At first, Futa Naruto could be scared or confused by the female Kyuubi. However, as he gets to know her personality (which might be different from the regular Kyuubi), he starts to develop feelings of friendship. Maybe the female Kyuubi shows a more nurturing side, helping Naruto when he is injured in battle. This kindness makes Naruto see her as more than just a source of power, and their relationship evolves from there.
One way is through shared experiences. If they are both put in a situation where they are in danger, like being trapped in a genjutsu together. They have to work together to break free. This would force them to communicate and rely on each other. Also, the male Kyuubi could start to see Naruto's dreams of peace and be influenced by them. He might then start to support Naruto more actively in his pursuits.
It can start with mutual respect. Naruto respects Tsunade as the Hokage and for her great strength. Tsunade, in turn, can see Naruto's potential. For example, Tsunade could start mentoring Naruto more closely, like sharing her experiences during the wars which Naruto hasn't been through yet. This would create a bond between them.
The relationship can be developed through mutual respect. Naruto could respect the Fem Kyuubi's power and knowledge, and in return, she could respect his determination. For instance, they could start off as wary of each other but gradually learn to trust. They might share stories about their pasts, with Naruto talking about his lonely childhood and the Fem Kyuubi about her long existence. This sharing could create a connection between them.
The relationship could be developed uniquely by having Sabine's futa nature play a role in their communication. For example, she might have a different way of expressing emotions or intentions because of it. Ezra could learn to understand this new aspect of her, and it could bring them closer together.
The relationship can be developed through shared experiences. For example, if they fight side by side against enemies who are specifically targeting Naruto because of the Kyuubi. This would make Naruto see Hinata as a reliable partner, and Hinata would get to show her love and loyalty.
Their relationship could start with mutual understanding. Naruto, who has always had a connection to the Kyuubi, now with a female form, could start to see her as more than just the beast inside him. They could have conversations about his dreams and her past.
The relationship can be developed through shared battles. When they fight side by side against foes, they can start to trust each other more. For instance, if they face a powerful enemy that neither could defeat alone, they would rely on each other's strengths.
Their relationship can start with mutual respect. Naruto, in his godlike form, respects the power of the Fem Kyuubi. The Fem Kyuubi, in turn, respects Naruto's newfound divinity. This respect can gradually turn into friendship as they fight side by side.
The relationship can start with mutual mistrust. Since the Kyuubi has a history of being feared, Naruto might be cautious at first. But as they interact more, they find common ground, like their shared love for the forest around the village. This simple shared interest can start to build a bond.