He could also start to open up more to his friends. Naruto might realize that he doesn't have to face his loneliness alone. For example, he could talk to Shikamaru or Sakura about his feelings. By sharing, he might find that they understand him more than he thought and that he's not as alone as he feels.
In many fanfictions, Naruto might start by training harder. He throws himself into his ninja training as a way to distract himself from the loneliness. It gives him a sense of purpose and also helps him become stronger.
He might focus on his training. By pouring his energy into getting stronger, he can distract himself from his lonely feelings. Naruto has always been determined, and training gives him a sense of purpose.
One way is by his body language. He could be described as always sitting alone in the common room, hunched over, not interacting with others. His eyes might be downcast, showing that he's lost in his own world of loneliness. Maybe he avoids eye contact, as if he's afraid of getting too close to people. The author could also use the setting to enhance this feeling. For instance, describing him walking alone in the empty corridors of Hogwarts at night, with only the sound of his own footsteps echoing, emphasizing his solitude.
In many such fanfics, it might show Naruto's early days in the village more harshly. Maybe it details how he was truly isolated, with no one to share his meals or his dreams. For example, it could describe his evenings alone in his small apartment, longing for a family or a friend to talk to.
His parents' death also contributed to his loneliness. Growing up without them, he didn't have that family support and love that most kids had. He had to fend for himself and deal with his feelings of abandonment all alone. And in the fanfiction, perhaps his friends are too busy with their own missions or problems, leaving him feeling isolated.
Naruto might cope by focusing on his goals. He's always been determined, so he could pour all his energy into achieving something in the modern world, like getting an education or mastering a new skill.
He might try to prove himself. Naruto has always been a determined character. He could focus on his ninja training more intently, aiming to show everyone his worth despite being neglected. Maybe he'd also start to distance himself a bit from his family situation and form closer bonds with his friends like Sasuke and Sakura, who might understand and support him through this tough time.
In this kind of fanfiction, Naruto may also feel a great deal of sadness and confusion at first. However, as time goes on, he could use that pain as motivation. He might think that if his family won't recognize him, he'll make a name for himself in the ninja world in a way that they can't ignore. He could start taking on dangerous missions, not just for the village but also to show his family what they're missing out on.
Well, Naruto could also seek support from his friends like Sasuke or Sakura. They have been through a lot together, and they might be able to offer him some comfort and advice on how to handle this difficult situation. Since Naruto values his friendships highly, their words could have a big impact on him.
In this fanfiction scenario, Naruto's reaction could be complex. Given his character, he would likely be deeply affected by his parents' hatred. He might have dreams where he tries to seek their love but is constantly rejected. As a result, he may focus all his energy on his ninja training, not just to prove himself to others, but also in the hope that one day his parents will see his worth. He may also develop some trust issues, being cautious around those who show kindness, always suspecting an ulterior motive behind it. But as he grows and experiences more, he could gradually come to terms with the situation and find his own path in life.
Well, Naruto has always been a fighter. In this situation, he might start to explore his own unique abilities more deeply. He could go on solo missions to prove his capabilities. Also, he might look for a mentor figure other than those in his immediate family. For example, he could turn to Kakashi for more guidance and training. By doing these things, he gradually shows that he is not someone to be neglected.