Their relationship could deteriorate. Sasuke has been trying to break free from Orochimaru's influence. If Naruto willingly goes to Orochimaru, Sasuke might feel betrayed. He may think Naruto doesn't understand the danger and the wrongness of Orochimaru. This could lead to more conflict between them, maybe even a physical fight.
It would likely become more complicated. Sasuke has his own history with Orochimaru. If Naruto goes to Orochimaru for power, Sasuke might see Naruto as a rival in a different way. He could be jealous that Naruto is getting power from Orochimaru, or he could be angry that Naruto is making the same 'bad' choice he once did.
Their relationship could become stronger. Facing the danger that Orochimaru represents together would force them to rely on each other more. They might start to understand each other's motives and fears better.
His relationship with Sasuke would become more complex. Sasuke, who has always been proud of his Uchiha heritage and the Sharingan, might feel a mix of envy and pride that Naruto now has a part of what makes the Uchiha special. Naruto, on the other hand, would try to use the Sharingan to understand Sasuke better, perhaps seeing the world more from Sasuke's perspective.
In fanfiction, Naruto joining Orochimaru could make him a more complex character. He'd be exposed to Orochimaru's unethical practices, which could make him question the ninja world's values. He might develop a darker side, but also a deeper understanding of the gray areas. Sasuke would experience a transformation too. His relationship with Orochimaru would be a strange mix of mentorship and power struggle. He could become more ruthless, but also more calculating. His interactions with Naruto in this new setting would be full of tension and moral dilemmas.
His character would become more aggressive and less empathetic. Since Orochimaru is a power - hungry and often cruel character, Naruto under his control would likely act in ways that are not in line with his usual self. He might be more willing to use force and less likely to try to understand his opponents.
On the other hand, their relationship could also grow stronger. They would be relying on each other more in this new and dangerous situation. Naruto would be even more protective of Hinata, and Hinata would be a source of comfort for Naruto. They would have to communicate and trust each other more deeply to survive in Orochimaru's lair.
His relationship with Sasuke would definitely change. Sasuke might be initially shocked and confused. He might see Naruto in a new light, not just as a rival but also as someone he needs to protect. Their dynamic could shift from pure rivalry to a more complex relationship with new emotions involved.
Their relationship would likely become more complex. They might start to protect each other more fiercely. For example, Sasuke might not leave the village in the first place because he now has a closer family tie to Naruto. Naruto would also be more insistent on getting Sasuke to stay and see him as an important part of his family.
If Sasuke kidnapped Naruto, it could initially seem like a huge betrayal. However, Naruto is known for his ability to forgive. He might see this as Sasuke still caring about him in his own, twisted way. This could make their relationship more complex, with Naruto constantly trying to reach out to Sasuke and Sasuke struggling with his own emotions and reasons for the kidnapping.
It would likely become more cooperative. They'd have to communicate more often to take care of the pregnancy - related matters.
The dynamic would shift a bit. Naruto would have to balance his friendship with Sasuke and his duties as Hokage. He would probably try to bring Sasuke more into the fold of the village, making him feel like a true part of it. Sasuke, in turn, would start to see the village in a new light, through Naruto's leadership. Their relationship would be a key factor in the stability and growth of the village.