Naruto would be cautious. He's been through a lot in his life, and he knows that powerful items often come with a price. He might start to investigate where the blades came from and what their purpose is. He'd also be thinking about how to keep them safe from his enemies. He doesn't want these blades to fall into the wrong hands. So, he'd be on high alert while also being intrigued by the potential power they hold.
He probably gets very worried. Kakashi is Naruto's teacher and mentor, so he'd likely be immediately concerned and rush to Naruto's side to assess the situation.
He is probably very excited. Naruto has always been eager to learn new things and become stronger. Finding an Uzumaki scroll means he has the chance to discover something unique about his own clan, so he would be filled with anticipation.
He would be very angry. Naruto is not one to take betrayal lightly.
He could be very surprised at first. Maybe he's just out on a normal day in the forest and suddenly comes across a baby. His immediate reaction might be to look around for any sign of the baby's parents.
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.
In the fanfiction, Naruto finding the Blades of Chaos could lead to him being hunted by those who also desire the blades. They are powerful and rare, so many would be after them. Naruto would then have to fight to keep them while also trying to master their use.
At first, Naruto might be a bit hesitant. He's not used to having something so personal from his parents. But then, his curiosity would get the better of him, and he would slowly unroll the scrolls, his hands trembling slightly as he realizes that he's about to learn things he has always dreamed of knowing about his parents.
He may show a rare moment of kindness. Given his own past traumas and experiences, he might empathize with Hermione on some level. He could offer her some words of wisdom or even some form of magical assistance to help her get better.
He might be initially startled. Snape is used to seeing Hermione as a strong - willed and confident student. So seeing her crying could catch him off - guard. But then he might quickly put on his usual cold facade and ask her curtly what's wrong.
He'd probably be shocked. I mean, a tank is so out of place in the Naruto world. He might be scared too, not knowing what this huge, metal thing can do.