Their relationship could be developed further through mutual understanding. For example, Naruto could learn more about Kurama's past and the reasons for his anger and hostility in the beginning. This would make Naruto more empathetic towards Kurama, and Kurama in turn could start to trust Naruto even more.
One way is through shared experiences. For example, they could go on a journey together outside the village. During this journey, they face challenges like bad weather, lack of food, and dangerous animals. As they overcome these challenges together, their bond grows stronger. Also, Naruto could introduce Kurama to his friends, and Kurama could learn to interact with humans in a more friendly way. This would show that their relationship is not just about being sealed together but about true friendship.
To develop their relationship in fanfiction, one approach could be to give the female Kurama a backstory that makes her more relatable to Naruto. Say she was once a normal fox in the forest before being transformed into a powerful being. Naruto, with his kind heart, would be sympathetic to her situation. They could also have moments of cultural exchange. Naruto could teach her about human traditions, and she could share with him the ancient knowledge of the fox spirits. This exchange of ideas and experiences would help build a strong relationship between them. Moreover, having them face internal conflicts together, like Naruto's struggle with his own power and the female Kurama's identity crisis, would also strengthen their bond as they support each other through these tough times.
A really unique way to develop their relationship is to have them swap abilities for a short period. Naruto gets some of Kurama's fox - like abilities and Kurama gets some of Naruto's human abilities. This forces them to understand each other's perspectives in a whole new way. They have to learn how to use these new abilities and in the process, they become closer. Another aspect could be that they are both transported to a parallel dimension where they are the only ones who know each other. They have to rely solely on each other to survive and find a way back home, which would greatly enhance their relationship.
One unique way to develop their relationship is through art. In the fanfiction, Naruto could have the ability to draw out Kurama's chakra in a new form using his own creativity. This would be a new way of interacting that combines Naruto's love for art and his connection to Kurama. As they explore this new form of chakra manipulation together, their bond deepens.
The relationship could be developed through shared dreams. Every night, Naruto and Kurama enter a dreamscape where they can communicate freely without the interference of the outside world. In these dreams, they gradually open up to each other about their past traumas. For Naruto, it could be about his loneliness as a child, and for Kurama, it could be about his long - held resentment towards humans. Through this sharing, they grow closer.
It might be portrayed as a very strong and almost spiritual connection. They could be shown as two halves of a whole, with Naruto relying on Kurama not just for power but also for emotional support and vice versa.
A unique way to develop their relationship could be through a series of challenges. For example, they are trapped in a mysterious dimension together and have to rely on each other to escape. In the process, they discover each other's strengths and weaknesses, and Kurama realizes that Kushina is not just Naruto's mother but a powerful ninja in her own right. This mutual respect and reliance would strengthen their relationship.
Another way to develop her character is to give her a long - term goal. In fanfiction, she could decide that she wants to use her powers to bring peace to the ninja world. Along this journey, she would face many challenges, and her interactions with Naruto would shape her into a stronger, more self - assured character. Naruto could be her inspiration, seeing his unwavering determination to achieve peace, and she could strive to be like him in that regard.
One way could be that Naruto's skills and values from his own world clash and then blend with the supernatural elements in Highschool DxD. For example, his strong sense of justice might lead him to oppose some of the more chaotic or immoral actions in the DxD world. And his ninja techniques could be a new and interesting addition, like using shadow clones in battles against devils or fallen angels. Kurama could also play a role, perhaps his chakra influencing the power dynamics in the DxD setting.
To develop their relationship in the fanfiction, start with small acts of kindness. Naruto could bring Kurama some food from the human world that he thinks Kurama might like. Then, gradually build up to more significant events. Let them protect each other. For example, when Naruto is in danger, Kurama could use his own power in a new way to save him. And vice versa. Also, introduce some external factors that force them to rely more on each other, like a prophecy that says only their combined efforts can save the ninja world. This would make them realize the importance of their bond even more and deepen their relationship as brothers.