Well, Boruto could be very inspired. Naruto's past is full of struggles, from not having parents around to being constantly underestimated. When Boruto discovers this in the fanfiction, he might realize that his own problems are not as big as he thought. He could be motivated to work harder and not take for granted the things he has, seeing how much Naruto had to fight for everything.
Kakashi may also get angry. Angry at the people or things that caused Naruto to get those scars. This anger could fuel his determination to make Naruto stronger, so that he can better defend himself in the future. He might then intensify Naruto's training, all while having a new - found sense of protectiveness towards Naruto.
At first, Naruto might be shocked and heartbroken. He has always longed for family acceptance, so being banished by them would be a huge blow. He could feel betrayed and angry, especially if he doesn't understand the reasons behind it.
During their absence, Naruto may have developed a sense of longing and hope. Longing for his family made him cherish the idea of family more. And the hope of their return kept him going. He would constantly think about their reunion, which influenced his actions and decisions. He might have been more cautious in dangerous situations, thinking about how his family would feel if he got hurt.
Naruto might initially be heartbroken. He's a character who values family and connection deeply, so rejection would hit him hard. He could go into a state of self - doubt, wondering what's wrong with him.
Naruto's reaction could be complex. He would feel a deep sense of loss and loneliness. But he has the spirit of never giving up. He might start to question the concept of family and what it really means. This self - reflection could lead him to grow as a person. He could also become more empathetic towards others who have been rejected or abandoned. In his journey, he might encounter people who have similar experiences, and together they would form a bond and support each other while he tries to find his place in the world without his family.
Naruto would probably be very confused at first. He has grown up without his parents, so suddenly being confronted by them or a new family in a crossover would be a huge shock. He might be hesitant to trust them right away.
At first, Naruto would likely be very confused and hurt. He has always craved family love and acceptance, so this sudden turn would be a huge blow. He might try to plead with his family, asking them to believe him and give him a chance to explain.