Naruto's neglect of his heritage can have a profound impact on the overarching theme of the fanfiction. If heritage represents a sense of identity and purpose in the Naruto universe, his neglect means he's sort of adrift. This can change the story from a typical 'coming - of - age - with - heritage' type to a more 'finding - oneself - despite - neglecting - heritage' plot. It could also lead to new character developments as he encounters different cultures or powers that make him reevaluate his decision to neglect his heritage.
Maybe he's been influenced by someone who has a different view of heritage. For example, if he meets a character who believes that one should create their own identity rather than relying on heritage, Naruto could be swayed. Another possibility is that he has some sort of resentment towards his heritage. Perhaps there are things in his family's past or in the traditions associated with his heritage that he doesn't agree with or is ashamed of.
Well, it could strengthen his bonds. His friends might see him in a new light, with more understanding and respect. For example, they could realize the weight of his past and be more empathetic towards his struggles.
In the fanfiction, when Naruto learns of his heritage, he often becomes more confident. Knowing where he comes from gives him a sense of purpose. He might start to train harder, believing that he has a greater destiny due to his lineage.
Well, it could strengthen his bond with some characters. For example, he might feel a closer connection to his clan members if he discovers his heritage. He could also gain new respect from his peers who now see him in a different light, perhaps as a more important figure within the village due to his lineage.
It would also impact his relationship with his village. The village has always seen Naruto as a part of their heritage in a way, especially considering his connection to the Fourth Hokage. If he rejects his heritage, some villagers might feel betrayed or confused.
He might start seeing himself as part of a greater legacy. Knowing he's an Uzumaki could make him feel more powerful and connected to his roots. He could see that his strength isn't just his own, but part of a family trait.
One possible plot twist could be that his heritage is linked to an enemy he thought was unrelated. So he has to reevaluate his views on the whole conflict.
He might feel angry and frustrated. Naruto has always been proud of his potential and his roots in some way. Being denied his heritage would be like taking away a part of his identity, so he'd likely be quite mad at those who are doing the denying.
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.
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.