One possibility is that Naruto and Kyuubi start training together in a special dimension. Kyuubi could teach Naruto some of the secrets of the Uzumaki clan that it has witnessed over the years. They could then use this knowledge to strengthen Konoha. Another aspect could be that they work together to break some of the old grudges between humans and tailed beasts. Naruto's positive attitude and Kyuubi's new - found respect for Naruto would be the driving force behind this. For example, they could organize a big event where ninjas and tailed beasts compete in friendly battles to promote understanding.
Well, they could go on a journey to find other tailed beasts and form an alliance with them. Since Naruto and Kyuubi are partners, Kyuubi's knowledge about the other beasts could be really useful. They might also encounter some rogue ninjas who are after Kyuubi's power. Naruto, with his strong will and Kyuubi's power, would be able to fend them off. And who knows, they could end up creating a new ninja village where humans and tailed beasts can live in harmony.
In fanfiction, Naruto and Kyuubi as partners could have amazing adventures. They might explore uncharted parts of the ninja world together. Naruto could use Kyuubi's power in new and creative ways, like combining it with his Rasengan in unique forms. Maybe they'd face off against ancient evils that were once sealed away by the Sage of Six Paths. Their partnership could also lead to Naruto having an even deeper understanding of the chakra and the nature of the tailed beasts.
They could go on a journey to discover the origin of the Kyuubi's power. Naruto has always been curious about the power within him, and with the Fem Kyuubi as a friend, they could explore ancient places together. Maybe they find some long - lost scrolls that explain the true nature of the Kyuubi's power and how it was created. Along the way, they face various obstacles like traps set by ancient shinobi clans who wanted to keep this knowledge hidden.
In such fanfiction, their relationship often develops through mutual respect. Naruto no longer sees Kyuubi just as a source of power but as a friend. Kyuubi, in turn, starts to value Naruto's determination and kindness. They might have heart - to - heart conversations in Naruto's mindscape, sharing their past traumas and hopes for the future.
Sasuke could be quite popular. His complex relationship with Naruto and his own power could add interesting dynamics to the fanfiction. For example, he might be jealous of Naruto's bond with the Kyuubi at first but then come to understand its importance.
Well, they could embark on a journey to find other tailed beasts and try to form a new kind of bond among them. This would be an adventure full of challenges as some of the tailed beasts might be hostile at first. Naruto and Kyuubi, as brothers, would use their combined strength and Naruto's persuasion skills to make peace with them. Along the way, they would also learn more about each other's capabilities and grow closer as brothers.
A plot could involve Naruto and the Kyuubi being separated by an evil force that wants to control the Kyuubi. Naruto then has to fight his way through various obstacles and enemies to reunite with the Kyuubi and restore their partnership.
They could go on an adventure to explore the hidden secrets of the ninja world. Maybe there are ancient ruins that hold the key to a powerful jutsu, and Naruto and Kyuubi work together to uncover it. Naruto uses his ninja skills and Kyuubi provides the necessary power boost when needed.
Well, they could be involved in a school sports competition. Naruto would be all about the spirit of the game, while the Female Kyuubi might initially be reluctant but then get really into it to prove her strength. Or perhaps they are in a club together, like a mystery - solving club. They would use their unique skills, Naruto's ninja skills and the Kyuubi's intuition, to solve various strange events that happen around the school.
One thing that could happen is that Naruto's influence might make Itachi more open about his feelings. Itachi has always been a very private person, but Naruto's outgoing and empathetic nature could break down those walls. They could also combine their abilities in combat in unique ways. Naruto's Rasengan and Itachi's Fire - Style jutsu could create some really cool and powerful attacks.
In some fanfictions, they might have an adventure in a parallel universe. The Kyuubi and Naruto got transported there accidentally. In that universe, things were very different. They had to find a way back while also dealing with the threats in that new world. They worked together, with Naruto using his ninja skills and the Kyuubi providing its unique abilities. It was full of unexpected twists and turns.
One possible plot could be that Naruto, instead of being shunned in the village, is secretly taken in by the Kyuubi. The Kyuubi, seeing Naruto's loneliness, decides to raise him. Naruto would grow up learning unique skills from the Kyuubi, like advanced chakra control and perhaps some secret fox - related jutsu. This would make him a very different kind of ninja compared to the original Naruto in the series.