With his mentors like Kakashi, they would likely give Naruto advice on how to handle the sentient weapon. They might caution him about the potential risks, such as the weapon influencing Naruto's mind. Naruto would have to balance their concerns with his own feelings towards the weapon.
His friends might be a bit wary of the sentient weapon at first. Sasuke, for instance, might be suspicious and think it could be a danger. But Naruto would try to convince them that it's okay. Over time, if the weapon proves useful, they could come to accept it.
With his mentor figures like Kakashi, they would likely try to guide Naruto on how to handle this new discovery. They would caution him about the potential dangers and help him understand the responsibilities that come with possessing such an ancient weapon.
If the weapon is a blade, it will probably make his taijutsu more lethal. He can combine his already impressive speed and strength with the weapon's sharpness. His attacks will be more precise and deal more damage.
If the weapon is a chakra - enhancing tool, it will boost Naruto's existing jutsu. For example, his Rasengan could become more powerful, being able to break through stronger defenses.
One possibility is that the sentient weapon has its own goals and motives. It could lead Naruto on a quest to fulfill something it desires. For example, it might need to be reunited with its original creator or find a special place. Naruto would likely go along with it, seeing it as an adventure and also because he trusts his instincts about the weapon not being evil right away.
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.
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.
In a Naruto finds ancient technology fanfiction, his relationship with his sensei, like Kakashi, could be affected in an interesting way. Kakashi would be both proud of Naruto for the discovery but also cautious. He would guide Naruto in understanding the technology. This would create a new dynamic in their relationship, with Naruto relying more on Kakashi's wisdom and Kakashi having more faith in Naruto's judgment as he deals with this new and powerful discovery.
If the summoning contract has a connection to a particular family in the village, it could improve Naruto's standing with that family. He might be invited to their family events and be seen as an honorary member. However, if the contract is related to a dark or secretive part of the village's past, some villagers might be afraid of Naruto and try to distance themselves from him.
It makes Naruto more powerful. He can defeat stronger enemies more easily.
It could also change his stealth abilities. Since it's a shadow weapon, it may allow Naruto to blend into shadows more easily, making it easier for him to spy on enemies or launch surprise attacks. This would be a great advantage in his ninja missions.