It could be a sword. In many fanfictions, swords are common powerful weapons. Since the Shinigami is often associated with death and power, a sword with special abilities like being able to cut through spiritual barriers or absorb chakra could be a likely weapon for Naruto to obtain.
Well, he could become even more powerful. Maybe he'd use it to defeat stronger enemies like Madara or Kaguya more easily. With a legendary weapon, his status as a hero in the village would be even more solid.
Well, he could become even more powerful. He might be able to defeat his enemies more easily, like taking on Akatsuki members with less effort. The legendary weapon could also give him new abilities or enhance his existing ones, such as making his Rasengan even stronger.
In some Naruto fanfictions, Hinata could potentially be portrayed as a 'weapon' in a very metaphorical sense. For example, her Byakugan abilities might be exploited in unique ways that make her seem like a strategic weapon for a side or a cause. But in the canon Naruto story, she is a character with her own agency and not really a weapon.
Perhaps it's a unique staff. A staff could have different uses, like being a conduit for chakra. It could also have hidden compartments or be made from a rare material that gives Naruto an edge in battles. For example, it might be made from a metal that can absorb chakra attacks and then redirect them.
It could be an old sage. There are often sages in the Naruto world who have access to powerful artifacts. An old sage might see Naruto's potential and give him the weapon to help him in his fight against evil.
Naruto might be a staff - type weapon. He could use it for both close - range combat and to channel his chakra or soul power. The staff could have different forms, like it could extend or transform into other shapes depending on the situation, similar to how he can transform his Rasengan.
He could start by training intensively with different weapons under the guidance of some old and experienced ninja. They might teach him the proper techniques and stances for using each weapon effectively.
Well, it could be a sword with the power to cut through any jutsu. Maybe it has some special markings that only Naruto can understand. It might also be a staff that can control the elements in a unique way, giving Naruto an edge in battles.
It could be a super - charged kunai. Maybe it has some kind of special chakra - enhancing ability that makes Naruto's attacks much more powerful than normal.