Well, a common theme in such fanfictions is the chaos that ensues. The release of the Kyuubi is a major event. Villages could be destroyed, and Naruto has to learn to control this power quickly. Some fanfictions might focus on the training he undertakes to master the Kyuubi's power, perhaps with the help of some unexpected mentors.
One interesting Naruto and Kyuubi fanfiction could be about Naruto fully mastering the Kyuubi's power in a unique way. For example, he might learn to use the Kyuubi's chakra not just for combat, but also for healing and restoring the land. In this fanfiction, Naruto could be shown training with the Kyuubi's spirit, and they develop a deeper bond than in the original series.
Well, in 'naruto is loved by kyuubi fanfiction', there might be a focus on how Naruto's power evolves with Kyuubi's love. It could be that Kyuubi shares some of its chakra in a different way, not just the typical way in the main series. This new form of power - sharing might give Naruto abilities that make him stand out even more among his peers and enemies.
There might be a fanfiction where the Kyuubi has a sentient form outside of Naruto and can interact with other characters in the Naruto world. It could form an unlikely alliance with some of the Akatsuki members, who initially wanted to capture it, but then realize that together they can achieve a greater goal, like overthrowing a corrupt shinobi village leader.
Well, one interesting aspect is the exploration of the Kyuubi's backstory. In fanfiction, authors can create their own versions of how the Kyuubi came to be so feared and powerful. For example, some might write about its origin in a more mythical and detailed way compared to the original anime. Another aspect is the character development of Naruto in relation to the Kyuubi. Fanfiction often shows Naruto growing in different ways as he learns to control and work with the Kyuubi's power. He might gain new insights or face different challenges that were not part of the main storyline.
One interesting 'naruto kyuubi fanfic' story could be about Naruto having a deeper connection with the Kyuubi than in the original series. For example, he might be able to communicate with the Kyuubi in a more friendly and strategic way, like they become true partners in battle. They could share knowledge and power more directly, leading to Naruto developing new and unique jutsu.
One interesting fanfiction could be about how the power of the Kyuubi affects a character with an I - Cup figure in a unique way. Maybe it gives her enhanced speed or strength that is related to her physical form in a strange way.
A third storyline could be centered around the female Kyuubi's past. Fanfiction writers could create a backstory for her, like she was once a guardian of a lost civilization. When Naruto discovers this, they embark on a quest to find remnants of this civilization, which could lead to uncovering powerful artifacts or secrets that could change the fate of the ninja world.
One interesting plot could be Naruto using his unique bond with Kyuubi to help it regain its lost memories. Naruto might explore the Kyuubi's past and discover things that even the Kyuubi itself had forgotten. This could lead to new powers or a deeper understanding between them.
In some fanfictions, the Kyuubi's protection might lead to Naruto having a special bond with nature. Since the Kyuubi is a powerful force, it could influence Naruto's chakra in a way that makes him more attuned to the natural elements around him. This could give him an edge in battles, like being able to manipulate the environment in ways others can't.
A possible storyline is that Fem Naruto discovers a hidden ability of the Kyuubi that is related to femininity. Since she is female, she is able to unlock this power that was previously unknown. This new power helps her in battles and also changes the way the village views her and the Kyuubi. It could also lead to a story where other female characters in the village are inspired by her and the Kyuubi's relationship and start to train to become stronger in their own ways.