He would become more confident. Knowing that he has access to the secrets of his clan through the scrolls would boost his self - esteem. He'd feel like he has a stronger connection to his roots, which would show in his attitude towards his ninja duties.
His relationships could change too. He might be seen as more of an authority figure among the Uzumaki descendants in the village. They would look up to him as someone who has access to the clan's lost knowledge. This could also lead to some jealousy from other ninjas who are not part of the Uzumaki clan, but Naruto would have to learn to handle these new dynamics in his relationships while still being true to himself.
If the scrolls contain difficult knowledge or a great responsibility, Naruto might become more serious. He would have to grow and adapt to handle whatever new situation the scrolls present. For example, if there are dangerous jutsu in the scrolls, he has to be more cautious and mature in his decisions regarding their use.
Well, it could lead to him uncovering secrets about his family. Since he is an Uzumaki himself, these scrolls might have information about his parents or ancestors that he never knew before. This could give him a deeper understanding of his heritage and place in the ninja world.
The scrolls could hold secret jutsu. Uzumaki clan was known for unique abilities, so it might be something like a powerful sealing jutsu. Maybe Naruto discovers a new way to enhance his Rasengan using the knowledge from the scrolls.
Naruto's character could develop a stronger sense of identity. Knowing that the Uzumaki clan saved him, he would be more curious about his heritage. This might make him more confident in his abilities as he realizes the power that runs in his blood. He could become more strategic in battles, incorporating the Uzumaki clan's fighting techniques into his own style.
Naruto would likely become more confident. Knowing he has a clan that accepts him would boost his self - esteem. He might not be as much of an outcast as in the original story, and this could lead to a less boisterous personality, as he doesn't have to constantly seek attention to be noticed.
He would develop a different sense of identity. Growing up in the Aburame clan, he would be part of their community and would take on some of their characteristics. He might become more secretive and less likely to show all his cards at once, like the Aburame clan members who are often mysterious. At the same time, his core values of friendship and protecting those he cares about would remain, but be expressed in new ways within the context of the clan.
His character would likely be more hardened. Growing up in clan wars means facing danger and betrayal often. He'd be less trusting at first. For example, he might not be as quick to befriend Sasuke as in the original. He'd have a 'survival first' mindset.
His relationship with Sasuke would be different. Instead of the rivalry born out of their time in Konoha, it could be more of a friendly competition between two powerful clans. Naruto, being Uzumaki - raised, would have a different perspective on power and friendship.
Naruto's character would likely become more hardened. He would have to grow up fast and learn to rely on himself. His usual cheerful and outgoing nature might be replaced with a more reserved and determined one. He'll still have his goal of becoming Hokage, but it would now be also about proving his clan wrong.
In many fanfictions, Naruto's reaction is a mix of shock and determination. The shock comes from finally learning about his clan, and the determination is to uphold the Uzumaki name. He could start wearing something that represents the Uzumaki clan, like a symbol on his clothing. He also may become more protective of the Uzumaki secrets and legacies he discovers.