His friends would have mixed reactions. Some might be in awe of his new power as the Kyuubi. Naruto's always been a bit of an outcast, but now with this new role, they might be more hesitant around him. However, true friends like Choji would still stand by him. His bond with Hinata could also change. She might be more protective or feel like she has to prove herself to be worthy of being by his side, given Naruto's new and powerful status.
Well, his friends might initially be shocked. But Naruto, being Naruto, would probably use his new power to protect them more fiercely. His relationship with Sasuke could become even more complex. Sasuke might see Naruto as a greater threat or a new source of power to rival. For Sakura, she'd be worried about Naruto's well - being and how this new form affects him. And his other friends like Shikamaru would start to strategize around Naruto's new abilities, changing the dynamic of their teamwork.
Naruto's new role as the Kyuubi would likely cause some strain on his friendships at first. His friends are used to the Naruto they know, not this new Kyuubi - like being. But over time, they would come to understand that he's still the same Naruto deep down. For example, with Kiba, they might have some initial clashes as Kiba's in - built competitiveness could flare up seeing Naruto's new powers. But as they go on missions together and Naruto uses his powers for good, they would gradually accept and adapt to the change.
His friends might be a bit more cautious around him at first. After all, the Kyuubi is a very powerful and somewhat feared entity. But as they see that Naruto is still himself, they gradually become more accepting. For example, Sasuke might initially be on guard but then realize Naruto is still his friend.
When the Kyuubi possesses Naruto, his friends' trust in him is tested. Some, like Shikamaru, might be more cautious and try to keep an eye on Naruto to make sure he doesn't go out of control. Others, like Choji, might be more sympathetic and try to offer Naruto support. This possession changes the dynamics. Naruto might feel isolated as his friends struggle to understand what's going on with him, and it takes time for them to rebuild their normal relationships.
In this fanfiction scenario, Sasuke might be jealous of Naruto's new power at first. He has always been competitive with Naruto, and seeing Naruto become something so powerful as the Kyuubi could trigger that jealousy. However, when they face a common enemy together, Sasuke sees that Naruto is struggling to control the Kyuubi's power and needs his help. This could lead to a new level of understanding and friendship between them, as they work together to help Naruto master his new form.
He probably gains the ability to control the chakra of the Kyuubi more freely. This could mean enhanced strength, speed, and reflexes. He might also be able to use some of the Kyuubi's unique jutsu like the Tailed Beast Ball. His healing factor could be improved as well, allowing him to recover from injuries faster.
If Naruto and the Kyuubi switch places, his friends might be initially very confused. They are used to Naruto's normal behavior. If the Kyuubi is in Naruto's body, it might be more aggressive or act in ways that seem out of character. His friends would have to figure out what's going on. But if Naruto is in the Kyuubi's place, his friends might start to worry about him more, not knowing what he's experiencing inside the seal.
His relationship with Sasuke would be different. Sasuke might view Naruto's connection with the Fem Kyuubi as a new source of power and be more wary or even jealous. But Naruto could use his new situation to try and bring Sasuke back to the right path earlier.
In this fanfiction, their relationship becomes more of a partnership. Instead of Naruto just using the Kyuubi's power, they work together as brothers. Naruto might start to understand the Kyuubi's feelings and motives better.
His friends would likely see him in a new light. They might respect him even more. For example, Sasuke might view Naruto as an even greater rival now that he has the status of a Sannin. And his other friends like Sakura would be proud of him and might rely on him more for difficult missions.
His relationship with Sasuke might become more complex. Sasuke, always the rival, might see Naruto's new overlord status as a challenge to his own power and ideals. They could have more intense ideological battles.
His relationship with Sasuke could become more competitive yet respectful. They'd both see each other as equals in a new way. Sasuke might start to see Naruto as a real rival worthy of his attention, and Naruto would be more confident in their interactions.