Naruto is used to being an outcast in some ways, but this is a new kind of misidentification. He might start by laughing it off, thinking it's a silly mistake. However, if it starts to affect his relationships or his ninja duties, he would become more serious. He'd probably try to correct the misunderstanding as clearly as he can. He might say something like 'I'm Naruto Uzumaki, and I'm a boy! I'll prove it to you with my ninja skills!'
He might be initially confused. Naruto is a character full of energy and he would probably just start blabbing about how he is a boy, not a girl. He could get a bit frustrated as well because Naruto doesn't like being misunderstood.
He might be initially surprised. Naruto has always been a bit oblivious when it comes to romantic feelings. So, his first reaction could be shock, with his eyes widening and him stuttering a bit as he tries to process the new information.
His family could be initially shocked and heartbroken. For example, his wife might be left in a state of disbelief, wondering why he would leave without much explanation.
In some cases, Naruto could be deeply hurt and withdraw from Hinata. He might question their relationship and whether he misjudged her all along. If the hurt is physical, he may also be more cautious around her in future interactions. For example, if she accidentally used a strong jutsu on him during training, he might be hesitant to train with her again without proper precautions.
He might be shocked at first. Just imagine seeing things that haven't happened yet. It's quite a mind - blowing experience.
Naruto could be confused. He may not understand why he was denied when he has accomplished so much. He might start to question the system and those in power. This could lead him to have some internal conflict as he tries to figure out whether he should continue to strive for the promotion within the existing framework or find his own path.
At first, Naruto might be really confused. He's used to thinking of his friends as his support system, so when they turn on him, he doesn't understand why. He'll probably try to talk to them, to ask what he did wrong. If they don't listen, he could become really sad and withdrawn. Maybe he'll start training even harder, using the pain of being rejected by his friends as motivation to become stronger.
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.
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 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 might be shocked at first. Naruto is used to seeing Kurenai as an ally, so being hurt by her would be unexpected. He could immediately ask her why she did it. If it was a serious injury, he might struggle to stay conscious while trying to understand the situation.