He could also develop a sense of determination to prove himself. Instead of wallowing in self - pity, Harry might strive to show his parents that he is just as worthy of their love and attention. He could study magic harder, practice his skills secretly, and look for opportunities to shine on his own terms.
Another reaction could be anger. Harry might be angry at his parents for their neglect. This anger could manifest in small acts of rebellion, like not following their rules or speaking out against their unfair treatment. He might also start to distance himself from the family unit as a whole, feeling that he doesn't belong.
Harry might become withdrawn and introverted. Feeling unloved and unwanted, he could start to keep to himself more, spending time alone in his room or exploring the grounds of their home alone, trying to make sense of why his parents seem to favor the twins.
He might become withdrawn. Feeling unloved and ignored, Harry could start to keep to himself more, not sharing his thoughts and feelings with his family. He may also become resentful towards the twins, seeing them as the cause of his being neglected, even if it's not entirely their fault.
It could also be that the Potters are under some sort of magical influence or curse. In the fan fiction world, there could be a dark force at play that makes them see the twins as more important. This force might be manipulating their emotions and perception, leading to the neglect of Harry.
One possible reason could be that the twins might have some special abilities or circumstances that draw the Potters' attention more. Maybe they are more outgoing and seem to need more immediate care or guidance. Another reason could be that there is some sort of miscommunication or misunderstanding within the family. For example, the Potters might think Harry is more self - sufficient when in fact he also needs their love and attention.
One popular 'alive potters neglected harry' fanfiction might be 'The Forgotten Boy'. In this type of fanfic, the Potters being alive yet neglecting Harry creates a whole new dynamic. It often explores themes of abandonment and Harry's journey to find his place in a world where his own family doesn't seem to care.
Sirius Black could also be part of it. He was Harry's godfather. He might have escaped from Azkaban earlier in this fanfic. He teams up with the Potters to rescue Harry. He could be the one who scouts out the Dursleys' house before the actual rescue operation, using his skills as an Animagus to stay hidden.
Harry might initially feel sad and confused. He could start to withdraw into himself, spending more time alone. Maybe he'll question what he did wrong to be treated this way.
At first, it might be really awkward. Harry has grown up without them, so he may be hesitant and distrustful. But as time goes on, they start to bond over shared interests or magical abilities. For example, the Potters might teach Harry some family spells that he never knew before.
Perhaps there's a plot against Harry by some dark forces, and the Potters believe that only they can protect him properly. They might think that the people who have been taking care of Harry so far are not equipped to handle the new and more dangerous threats. Also, it could be that the afterlife in the wizarding world has some rules or opportunities that allow them to try and get Harry back into their family fold. They could have been given a second chance, so to speak, and are eager to take it.
It could slow down the plot. For instance, if Harry's glasses are constantly malfunctioning, he might miss important clues or signals. This would add more obstacles to his journey of solving mysteries or fighting against the dark forces.
Fanfiction.net is a great place to start. It has a vast collection of fanfictions, including those with the 'alive potters neglected harry' theme. You can use the search bar to look for specific tags related to this concept.