If the doujutsu is very powerful, Naruto might become more confident, but also more cautious as he realizes the new responsibilities that come with such power. He would need to learn how to control it properly so as not to harm his friends or allies accidentally.
The unknown doujutsu could also make Naruto more isolated in some ways. Since it's an unknown power, some people might be afraid of him or suspect him of being a threat. This would cause him to struggle with feelings of loneliness and the need to prove himself. However, it could also lead to him finding new allies who believe in him and his good intentions, further shaping his character in the fanfiction.
His character development could also involve him becoming more of a strategic thinker. Guns require a different approach to combat than ninja tools. He'd have to think about ammunition, range, and reload times. This new aspect of fighting could force him to study more about his enemies' weaknesses and develop more elaborate battle plans. As a result, he could grow into a more well - rounded leader and fighter. He may also face challenges from his peers who don't approve of his new weapon choice, which would further shape his character as he defends his decisions.
If Naruto gets tattoos, it could show his growth into a more confident and self - assured person. Tattoos can be a form of self - expression, and for Naruto, it might mean that he has fully embraced who he is, including his past and his power. It could also make him seem more rebellious in the eyes of some in the village, which would add a new layer of conflict to his story.
Naruto would likely face more isolation at first. His wings would make him stand out even more than his status as a jinchuriki. This could lead to him being more self - reliant in the early days. But as he realizes that his wings can be an advantage, he could become more confident. For example, when he first masters flying with his wings during a training session, it would boost his self - esteem.
If Naruto fails the bell test in a fanfiction, his character development could take a different turn. He might become more determined and focused. Instead of being the carefree Naruto we know at the start, he could become more serious about his training, realizing that he has a long way to go. This failure could also make him more open to learning from his teammates, especially Sasuke, which could lead to a more interesting dynamic between them.
If Naruto had Juubi eyes in fanfiction, his character development would be significantly altered. He'd start with a sense of confusion and fear about this new power. However, as he delved deeper into understanding it, he would become more self - assured. His relationships would also change. Some friends might be in awe, while others could be jealous. This would force him to reevaluate his bonds. Eventually, he would use this power for the greater good, evolving into a more complex and powerful version of himself.
Naruto's understanding of the ninja world would deepen. With the new doujutsu, he could see things that were hidden from him before. This would make him more aware of the politics and power struggles in the ninja villages. He might start to question some of the long - held beliefs and traditions. He could also use his new insights to try and bring about positive change in the ninja world, like finding ways to end the cycle of hatred between different clans.
His character development would likely be stunted in terms of his social skills. In the original series, Naruto grows through his relationships. But if everyone hates him, he may not have the opportunity to learn empathy and understanding from others. He might focus more on self - preservation and become more self - centered as a result.
His self - confidence would be severely damaged. He might not believe in his own abilities as a ninja. For example, when facing challenges, he would be more likely to give up easily compared to the Naruto in the original series.
His character would likely become more confident. With all those doujutsu powers, he'd know he could handle most situations. He might also become a bit more solitary as he tries to master all the new abilities.
His character would likely face an internal struggle. On one hand, he has his values of friendship and protecting the village. On the other, he has this new relation to Lucifer which could bring out a more power - hungry side. For instance, he might be tempted to use Lucifer's powers for personal gain rather than for the good of all. He would have to constantly battle this internal conflict and decide who he really wants to be.