His character could change in terms of his power usage. With the Venom symbiote, he would have access to different powers like enhanced physical abilities and maybe some new jutsu - like a Venom - style Rasengan. Emotionally, he might struggle more with feelings of isolation as others might be scared of his new form. However, Naruto's never - give - up attitude would still shine through, and he would try to prove that he can control the symbiote and use it for good.
Naruto would likely face an internal conflict. His normal way of dealing with problems is through hard work, training, and believing in his friends. But the Death Note offers an easy way out, a way to kill without a fight. This would make him question his values. For instance, he might wonder if it's okay to use it on someone like Pain, who caused so much destruction in the village. On one hand, it could save many lives in the future, but on the other hand, it goes against his basic ninja beliefs.
In the wider ninja world, his relationship with other villages would change. Some villages might see him as an even greater threat now that he has the Rinnegan, and might try to form alliances against him. However, Naruto being Naruto, he would use his new power to show that he still has the same kind - hearted goals. He would try to use the Rinnegan to bring about peace even more strongly, and over time, win over those who were initially suspicious.
His personality could change in several ways. Since the Senbonzakura is a power associated with precision and grace, Naruto might become more focused on details. He may also develop a new sense of pride in his abilities. However, he would still keep his core values of loyalty and friendship. He might use the Senbonzakura to protect his friends in a more refined way, rather than just charging in. This could lead to him being seen as more of a strategic fighter, but he would still be the same Naruto at heart, always ready to stand up for what he believes in.
His appearance would change drastically. As Venom, he would be taller, more muscular, and have a menacing look. His costume would be black with the big white spider logo. Also, his relationships would be affected. His friends might be scared of him, and he might have to prove that he is still the same person inside, despite the exterior and some personality changes.
Naruto might become more aggressive at first. The influence of Venom could bring out his darker side. But as he gets used to it, he would learn to balance it with his usual positive and determined self.
Naruto's fighting style would evolve significantly. He would no longer just rely on his brute strength and the Nine - Tails' chakra. With the Eternal Mangekyou Sharingan, he could use powerful genjutsu and ninjutsu unique to the Sharingan. He might start to use more stealth and precision in his attacks. His training would also change as he has to master the new abilities. He would probably study Uchiha history and techniques more, which would make him more well - rounded as a ninja. This new power would also bring out a more serious side of Naruto, as he now has the responsibility of using such a powerful ability for the good of the village and the ninja world.
Naruto's relationship with his friends in Konoha would also be affected. They might look at him with a new sense of awe and respect. However, some might also worry that the weapon could put Naruto in more danger. For example, Shikamaru might be concerned about the political implications of Naruto having such a powerful item. This could lead to some tension and interesting dynamics within the group of friends.
His relationship with Sasuke would be very different. With the Sharingan, Naruto would have a new connection to Sasuke's clan. Sasuke might see Naruto in a new light, perhaps as a rival in a different sense. They could have more complex interactions as Naruto tries to understand the Uchiha side of things.
Naruto's character would likely become more versatile. The Gunbai would force him to think differently about combat, as it's a different weapon compared to his kunai or shuriken. This would make him more strategic and less reliant on his brute force.
He might become more serious. Having such a powerful item would weigh on him.