His relationship with Sasuke would be very different. Sasuke might see Naruto in a new light, perhaps with more respect as he's achieved the highest position in the village. Naruto would also have a different dynamic with Kakashi. He'd be more of an equal now, and Kakashi would have to adjust to Naruto being in a leadership role.
With his friends like Shikamaru and Choji, Naruto would become more of an authority figure. But he'd still be their friend at heart. They might be a bit more cautious around him at first, but Naruto would make sure to keep their friendships strong. And his relationship with the older generation like Tsunade would shift. She'd probably have to trust Naruto more and give him more responsibilities, which could be a bit of a struggle for her at first.
His relationship with Sasuke would likely become more of a partnership. They would work together to protect the village and the ninja world. With Sakura, Naruto might become more of a respected leader figure, and she could be one of his most trusted medical ninjas. And for Kakashi, Naruto would now be his equal in terms of leadership, and they would probably exchange ideas on how to better lead the village.
Naruto's relationship with the older generation like Tsunade would change significantly. Tsunade, being the former Hokage, would now be in an advisory role. Naruto would seek her advice on matters of the village's economy and long - term stability. With his peers like Kiba, Naruto would be more of a guiding figure. Kiba would look up to Naruto as the Hokage and might ask for more challenging missions for his growth. And with Hinata, their relationship could become more official. As Hokage, Naruto would have to balance his personal life with Hinata and his duties towards the village.
Her relationship with Naruto would likely become more of an equal partnership. Instead of Naruto being the main hero, they would share the responsibility of leading the village. They might have more serious discussions about village policies and strategies.
For Naruto's relationship with Kakashi - sensei, Kakashi would be very observant. He would notice the changes in Naruto immediately and try to guide him. Since Naruto is now a Youkai, his interactions with his peers would be different. Some might avoid him out of fear, like Hinata who would be very shy and worried about this new Naruto. But Naruto's core values would still be there. So over time, as he proves that he's still the same person deep down, his relationships could start to heal and grow in new ways, even if his appearance and some of his powers are now different.
His relationship with Sasuke would likely become very strained. Sasuke, who has his own dark path, might still see Naruto's new Jashinist ways as too extreme. With Sakura, she would probably be very disappointed and try to convince Naruto to return to his old self. As for Kakashi, he would be deeply concerned and might even see Naruto as a potential threat to the village at first.
Regarding his friends like Shikamaru and Kiba, Naruto would be more accessible. As Hokage, he would be very busy, but without that role, he could spend more time with them. They could all go on more missions together as a team, strengthening their friendships in a different way than if Naruto was in a position of leadership.
His relationship with Sasuke would be drastically different. Instead of their friendly rivalry, they could become enemies. Since Obito had a very different view from Kakashi, Naruto might also turn against Kakashi in this fanfiction. His friends like Sakura and Shikamaru would be confused and try to stop him, but he would be so far gone in his new mindset that he might not listen.
His relationship with Sasuke would be really interesting. Since Sasuke has his own complex connection to the Uchiha clan and Madara, Naruto becoming a Madara fan could either bring them closer together in understanding the Uchiha's past or drive them further apart if Sasuke doesn't agree with Naruto's new - found admiration. Maybe Naruto would start to push Sasuke towards a more 'Madara - like' view of power and revenge.
His relationship with Sakura would change a lot. Sakura might be initially scared of Naruto's fox form, but as she realizes it's still him inside, she would start to see him in a new light. She could become more protective of him. With Kakashi, Kakashi would be more cautious and observant, trying to figure out how to help Naruto control his new form. And with his rivals, they might either be more envious or more afraid of him now that he has this unique transformation.
His relationship with Sasuke would be very different. Sasuke might see Naruto as even more of an enigma. He could be both jealous of Naruto's new power and also concerned about what Naruto has become. Naruto, on the other hand, would try to show Sasuke that he's still the same person deep down.