Well, obviously Ichigo himself is the central character. His friends like Orihime and Chad may also play important roles. They could be there to support Ichigo as he discovers more about his heritage. And of course, Rukia is likely to be involved. Since she was the one who initially introduced Ichigo to the world of Soul Reapers, she might have some insights or be part of the story as Ichigo uncovers the secrets of his heritage.
Often in such fanfiction, Ichigo's understanding of his own identity deepens. He may have to grapple with the responsibilities that come with his heritage. This could involve protecting a certain legacy or taking on a role within a hidden part of the Soul Society that was only accessible once he knew about his heritage. It can lead to internal struggles as he tries to balance his old self with this newfound knowledge.
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.
Well, in this kind of fanfiction, Harry might start to discover all sorts of things about his family heritage that were previously hidden from him. Maybe he'd learn more about his parents' magical abilities in a new light, or find out about some long - lost relatives who had some unique magic powers.
One possible plot development is that Naruto could start to explore the secrets of his clan. He might search for ancient techniques or artifacts related to his heritage.
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.
His character may become more confident. Knowing his heritage gives him a sense of identity, so he might stand taller and be more assertive in the wizarding world.
One possible reason could be the burden that comes with his heritage. Naruto's heritage is filled with great power and responsibility. Maybe he feels that he can't live up to the expectations of his clan or predecessors, so he rejects it.
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.