With his friends like Sakura and Kakashi, Naruto might start to see himself as more of an individual with a unique skill set. He could become a source of inspiration for them to also explore different forms of combat. For example, Sakura might be interested in learning some swordsmanship defense techniques from Naruto to complement her medical ninjutsu.
His relationship with Sasuke could become more competitive in a different way. Instead of just competing in ninjutsu, they would now compete in swordsmanship skills. This could add a new layer to their rivalry.
His relationships would change drastically. With his friends in the Hidden Leaf, there would be a sense of distance. For example, Sasuke might be confused by Naruto's decision. But at the same time, Naruto might form new relationships with the animals and plants in his hermitage area.
His relationship with Sasuke would become very strained. Sasuke, who has always been somewhat distrustful, would see Naruto as a real threat now. He might even consider Naruto an enemy and try to stop him.
Naruto's relationship with the other Leaf Village ninjas would also shift. Some might be suspicious of his new - found admiration for Itachi, especially those who were directly or indirectly affected by Itachi's actions. However, others who understand Itachi's true motives, like Kakashi, might support Naruto. This could create a complex web of relationships within the village, with Naruto at the center trying to balance his new beliefs and his old friendships.
His relationship with Sasuke would be severely strained. Sasuke, who has his own goals and views on power, would see Naruto's demon transformation as either a threat or a sign of weakness. He might distance himself from Naruto or even see him as an enemy to be defeated.
With his enemies, they would now see him as a more dangerous threat. Instead of the Naruto who always tried to understand and find a peaceful solution, this new bloodthirsty Naruto would be more likely to attack on sight. His enemies would either try to avoid him or team up against him, which would create a whole new dynamic in the ninja world. As for his relationship with the village, the villagers who once supported him might start to fear him and demand that he be controlled or exiled.
His relationship with his mentor, like Kakashi, would also change. Kakashi would probably be very concerned and try to guide Naruto back to his normal self. However, Naruto in wrath might see Kakashi's attempts as interference and oppose him. Naruto could also start to distance himself from his other friends like Shikamaru and Choji, who would be left wondering how to bring back the old Naruto they knew.
With the village as a whole, Naruto's status might change. Some villagers who once saw him as a powerful hero might now pity him. This could be difficult for Naruto to handle. However, the children in the village would likely look up to him even more, seeing his struggle against blindness as an inspiring example. His relationship with the village elders would also be different. They might question his ability to continue being a ninja, which would put Naruto in a position where he has to fight not only his blindness but also the doubts of the elders.
His relationship with Sakura would be affected. Sakura might be scared at first but then try to find a way to help Naruto. She could use her medical skills to see if there's any way to reverse his undead state.
His relationship with Sasuke would be very interesting. Since Sasuke has a past connection with the Hidden Sound Village, Naruto being Otokage could be a turning point in their relationship. They might work together more closely to rebuild and reform the village. Also, Naruto's relationship with the other Kages would change. He'd be seen as more of an equal now, and there could be more diplomatic meetings and collaborations between the villages.
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.