On the other hand, if there are other people in the bunker with Naruto, he could form very close bonds with them. They would be sharing the same confined space, facing the same challenges. It could be like a new family for Naruto. He might develop a mentor - like relationship with an older character in the bunker who has more knowledge and experience.
Naruto's relationship with the village elders could also change. They might view him as a deserter if they don't know the real reason he's in the bunker. But if Naruto is in the bunker because he's protecting the village in a different way, like guarding a powerful and dangerous secret within the bunker, then their perception of him could shift completely once they find out the truth.
His relationships with his friends in the village would likely become strained. Since he's living in a bunker, he's away from them. They might worry about him and feel left out. For example, Sasuke might think Naruto is avoiding him on purpose.
His relationships with his friends would become more complex. For example, Sasuke might be jealous or in awe of Naruto's new power. Sakura might see him as more of a distant figure, someone she can't fully understand anymore. And his old teachers like Kakashi would be in a position of having to respect Naruto's new status while still trying to guide him in some ways.
His relationship with his friends on the surface world would likely become strained. They might not understand why he chose to live in the underworld or be afraid to visit him there. But with some, like Annabeth, she might be determined to visit and support him no matter what.
One possible plot could be Naruto using the bunker as a secret training ground. He could practice new jutsus without being disturbed, and perhaps discover some hidden power within the bunker. Maybe there are ancient markings or seals in the bunker that he deciphers, leading to a new level of strength.
His powers might adapt to the more urban environment. His chakra control could be used in different ways, like using it to jump between tall buildings more easily.
His relationship with Sasuke would be very interesting. Sasuke, who has his own issues with the village, might see Naruto's banishment as another sign of the village's corruption. They could end up teaming up in a different way than before. With Sakura, she might be conflicted. She loves the village but also cares about Naruto. She could be one of the ones trying to bring Naruto back.
His relationship with Kurama might become more complex. Since he's now also a kitsune - like being. They could either become more competitive or find a new way to cooperate. With his friends, some might be in awe of his new form, while others might be a bit scared at first. But Naruto's kind heart would eventually make them all accept him as before.
If Naruto were an ancient god in fanfiction, his relationships would be transformed. His relationship with his teacher, Iruka, would shift from a mentor - student bond to something more like a prophet - deity relationship. Iruka might feel a great sense of pride but also a bit of unease in Naruto's presence. His friends in Team 7 would have to adjust. Naruto's new powers and status would make them reevaluate their own positions. They might feel a bit overshadowed, but also protected. And as for his enemies, they would be forced to either submit or plot more deviously against him, knowing that he is now an ancient god with powers they can't fully comprehend.
Naruto joining Akatsuki in fanfiction would turn his relationships upside down. His friends in the Leaf would initially feel betrayed. However, some might start to question if there's more to Naruto's decision. His relationship with Akatsuki members would be a mix. He'd be constantly in a tug - of - war with Itachi, who has his own plans regarding Naruto. And his interactions with Pain would be intense, as Pain represents a very different ideology from Naruto's. Naruto would have to struggle to find common ground or at least a way to coexist with these new 'comrades' while still holding onto his own values.
His relationship with Sasuke would become even more complex. Sasuke might be suspicious of Naruto's motives for joining Akatsuki, thinking he has truly turned to the 'dark side'. Or, they could end up on opposite sides of a conflict within Akatsuki itself if their goals within the organization differ.
His relationship with Sasuke would likely be very different. Sasuke might be more in awe of Naruto, but also feel a greater sense of distance. They would no longer be just rivals, but there could be a new power dynamic where Naruto is in a much higher position.