He would probably become very distrustful. After all, if your own parents betray you, it's hard to trust anyone else. He might isolate himself from others in the village, thinking that if his parents could turn on him, anyone could.
Naruto could also become more determined to prove himself. He might see this as a challenge to overcome and show his parents that they were wrong to betray him. This could lead to him training even harder and achieving greater power in the story. For example, he could master new jutsus much faster than before. In addition, his view of family would be severely distorted. He might not believe in the concept of family anymore and struggle to form healthy relationships in the future.
His reaction would depend on how the betrayal was presented. If it was a sudden revelation, he would be shocked and devastated. He may start to question his own worth, thinking that if his own parents could betray him, what was wrong with him? He could also become more reckless in his actions, not caring about the consequences as much since he felt like he had already lost the most important thing. This new Naruto could also be more empathetic towards the villains in the story, understanding their feelings of being wronged or betrayed in some way.
Emotionally, Naruto would have to deal with a whole new set of family relationships. He grew up without his parents, and now having them back would be a huge adjustment. He might struggle to fit into a 'normal' family dynamic, and there could be some friction as they all get to know each other again.
On a personal level, Naruto would finally get the family he always wanted. But it might also bring some confusion and adjustment issues. His parents would be from a different time, and they'd need to adapt to the new world Naruto lives in. For example, they might be shocked by the new technology and the changes in ninja warfare.
He might lose a sense of his own identity. His parents are an important part of who he is, and by renouncing them, he could struggle with feelings of emptiness or confusion about his place in the world. Also, he could face isolation from friends and allies who respected his parents or had a connection to them.
Naruto's power might also be affected. If he was betrayed, he could lose the will to fight or train. He might even start to doubt his own purpose. This could lead to a decline in his abilities, which in turn could put the village at risk if he was its main protector.
Naruto would likely be extremely hurt emotionally. Tsunade is like a mother figure to him, and such a betrayal would shatter his trust. He might become more withdrawn and question his own worth.
He would likely feel a great sense of anger. Naruto has a strong will, and this betrayal would fuel his anger. He might be determined to find out the truth and get revenge on those who wronged him. At the same time, he would also be in deep pain. It's like losing the most important thing in his life. This emotional turmoil could lead to a change in his personality, making him more withdrawn and less optimistic than before.
Well, in a fanfiction where Naruto is trained by his parents, the story would deviate a great deal from the original. His parents could teach him about the secrets of the village and their own experiences. This would shape Naruto into a different kind of hero. He may not have the same journey of self - discovery that he had in the original series. Instead, he would be building on the knowledge and skills passed down directly from his parents, which could lead to him achieving things like becoming Hokage much sooner.
He would be heartbroken. Naruto values friendship above almost everything. At first, he might not believe it and try to reason with his friends.
He could initially go into denial. Naruto has always been an optimist. He might not be able to believe that his wife, the person he loves, could betray him. But once the truth sinks in, he would start to analyze the situation carefully. He might try to find a way to redeem her, depending on the nature of the betrayal, as he always believes in the power of forgiveness and second chances.