Naruto would likely become more introspective. The Sharingan often comes with a lot of emotional baggage in the Naruto universe. He might start to question his own identity more, since the Sharingan is so closely tied to the Uchiha clan. He could also become more cautious in battle, as he now has a power that can be both a great asset and a great danger if misused.
Naruto would likely become more introspective. The Mangekyo Sharingan often comes with a lot of emotional baggage in the Naruto universe. So, Naruto might start to question his own identity more, especially since this power is from a clan he has no blood relation to. He could also become more cautious as he learns about the potential dangers of misusing the Mangekyo Sharingan.
His relationships would change too. Some of his friends might be a bit intimidated by his new power at first. But Naruto would work hard to show them that he's still the same person. He could also form new alliances with those who are interested in the Rinnegan's power, either for good or bad reasons. Overall, he would grow into a more complex and powerful version of himself, with a greater sense of responsibility for the ninja world.
His confidence might grow faster. Since the Sharingan gives an edge in combat, Naruto would likely win more battles early on, which would boost his self - esteem. He might also become more introspective as the Sharingan has some psychological aspects to it.
His character would develop in terms of leadership. With the Rinne Sharingan, Naruto would have even more power at his disposal, which could make him a more formidable leader. He could use the knowledge and abilities it gives him to better protect his village and make more informed decisions. For example, he could use its precognitive abilities (if it has any in the fanfiction) to anticipate threats and plan accordingly. Also, he might become more isolated as he tries to master this new power, but in the end, it would make his bonds with his true friends even stronger.
Naruto's character would develop a new sense of self - confidence. Having the Godlike Sharingan and being trained by Itachi would give him a feeling of being a part of something greater. He would no longer be just the 'loud - mouthed underdog' but a powerful ninja with unique abilities. However, he would also have to deal with the new expectations that come with this power. He might struggle with the idea of whether he is still the same Naruto or if the power has changed him too much. This internal conflict would be an important part of his character development as he tries to find a balance between his old self and the new, more powerful version of himself.
Naruto would likely become more complex. His initial naivete might be tempered by the new power. He'd have to be more cautious as the hollow powers could be dangerous. He might also develop a darker side that he has to constantly fight against. For example, the hollow powers could bring out some of his repressed anger in a more violent way.
Naruto's confidence would likely increase significantly. Having such a powerful and unique ability would make him feel more capable of protecting his village and friends. He might become a bit more reserved at first, as he tries to understand and master the new power, but eventually, he would use it to be more assertive in battles and in diplomatic situations as well, knowing he has an ace up his sleeve.
Naruto would likely become more introspective. The Rinne Sharingan is a very powerful and somewhat mysterious ability. Having it would force Naruto to understand more about the deeper aspects of chakra and the ninja world. He might become a bit more cautious as he realizes the great power he holds and the potential for it to be misused.
Naruto's character would likely become more protective. He has always been about protecting his friends and the village, but now with a child, his sense of responsibility would grow exponentially. He would be more cautious in his actions in the Blood Prison as he doesn't want to put his child in danger.
Naruto's character might become more cautious. Since Kamui is a very powerful and somewhat unpredictable ability, he would need to be more careful when using it. For example, he might hesitate at first, not wanting to accidentally send himself or his friends into the wrong dimension.