Naruto would likely become more distrustful at first. He's always been so open and trusting of his friends, so this betrayal would shatter that. He might become more withdrawn, constantly second - guessing people's motives.
Initially, Naruto would be extremely hurt and angry. His naivete about his friends' loyalty would be gone. As the story progresses, he could develop a more cynical view of relationships. However, he might also grow stronger in his resolve. He would realize that he can't always rely on others and would focus more on self - improvement. He might start to see the world in a more complex way, understanding that not everyone is as good - hearted as he thought. This new understanding could make him a more well - rounded and powerful ninja in the long run.
His character would likely become more complex. With the Sharinegan, he'd have to deal with new responsibilities and a different kind of power. He might become more introspective as he tries to understand the origin and purpose of this new ability.
Naruto's character would go through a major transformation. He'd lose some of his naivete and innocence. Instead, he'd become more cynical, but also more determined. He'd no longer take loyalty for granted and would be more cautious in his relationships. As he overcomes obstacles, he'd develop a new sense of identity that is not tied to his family's expectations.
His character could become darker. The once - cheerful and optimistic Naruto might turn cynical. He would start to question all the values he was taught about loyalty and friendship. For example, he might see his past friendships as a form of manipulation by the village. This new - found bitterness would be a major shift in his character.
His emotional side would be deeply affected. He might be more guarded and less likely to show his true feelings easily. He would see the world in a more cynical way at first. But as he grows, he could use his experiences to become more empathetic towards others who are also alone or neglected. For instance, he could start reaching out to orphaned kids in the village. His journey to becoming Hokage would also be different. Instead of having the typical family - inspired motivation, it could be a way to rewrite the story of neglect in his own life and in the village.
I think Naruto's friends would be quite shocked. For the more traditional ninja like Neji (if he were still alive in this fanfic), he would see the gun as an abomination to the ninja way. However, Naruto's closest friends like Kiba would be more open - minded. Kiba might see it as a cool new weapon and want to see what it can do. But overall, they would all be concerned about how Naruto got the gun and what it means for their world of ninjas.
At first, Naruto would be in disbelief. He has always trusted his friends wholeheartedly, so this would be a huge blow. He might then feel a deep sense of anger and sadness. However, Naruto being Naruto, he would likely also start to look for ways to prove his innocence or the misunderstanding. He might go on a journey of self - discovery to figure out what went wrong and how he can win back his friends' trust, all while dealing with the pain of the betrayal.
He would start to blend different cultures and values. The Jedi values associated with the lightsaber, like discipline and self - control, could start to influence Naruto. He might become more in tune with his spiritual side, similar to how Jedi connect with the Force. This could lead to new abilities and a deeper understanding of his own ninja powers, as he combines the teachings of the ninja world with those of the Jedi through the use of the lightsaber.
He'd become more empathetic towards creatures other than humans. Naruto is already kind - hearted, but having a Pokémon would expand his understanding of different species.
His character would likely become more complex. With the Tenseigan's power, he would face new challenges and responsibilities.
In this fanfiction, Naruto's character would experience a significant evolution. Initially, he'd be excited about having Kamui but soon realize the great burden it brings. He'd have to keep it a secret from some people to avoid unnecessary panic. As he trains with Kamui, he'd learn patience, which is not his strongest trait usually. His understanding of power would deepen. He'd see that power is not just about brute force but also about strategy and stealth. This new knowledge would make him a more well - rounded and formidable ninja, and his view of the ninja world would expand as he can now access places and situations that were once beyond his reach.