In some fanfics, they might abandon Harry because they are under a dark spell. This spell could make them lose their love for him and force them to leave. Another reason could be that they are blackmailed by some powerful dark forces. These forces may threaten their lives if they don't abandon Harry.
In certain fanfic scenarios, his parents might abandon Harry because they are being manipulated by a powerful and evil character. This character could be using false prophecies or illusions to convince them that Harry is a threat. They might also be in a situation where they think they have no other choice, for example, if they believe that by abandoning Harry, they can save a whole community or another loved one.
In fanfiction, his alive parents could abandon Harry due to a prophecy. They might have been told that Harry was destined for great evil or something terrible was going to happen because of him. So, in a misguided attempt to prevent this, they abandoned him. Or perhaps they were under some kind of dark magic influence that made them believe that Harry was a danger to them or the wizarding world, even though it was all false.
His life could become very difficult. He might have to fend for himself at a very young age. Maybe he has to live on the streets, stealing food just to survive.
One possible reason could be that she is under some sort of dark magic influence. Maybe a spell has been cast on her that makes her act out of character and abandon Harry.
Another reason could be that they had some sort of premonition or prophecy that indicated the Dursleys' place was a crucial part of Harry's future protection. Maybe a seer told them that for Harry to grow into the wizard he needs to be, he has to endure the Dursley experience first.
One reason could be a major betrayal within Konoha. If he discovers that some of the village elders or leaders have been secretly plotting against him or his friends, he might feel so disillusioned that he abandons the village. For example, if they try to sacrifice his friends for the so - called 'greater good' of the village.
Maybe they were under some kind of curse or dark magic that made them fear they would harm Naruto if they were close to him.
In the fanfiction, it could be that Danny's friends have their own problems to deal with. They might think that being associated with Danny is bringing more trouble into their lives. Maybe they get threatened by a new villain who warns them to stay away from Danny. Or they could simply be growing apart as they enter different phases of their lives and their interests no longer align with Danny's.
One possible reason could be a misunderstanding. Maybe Harry did something that was misinterpreted by his mate. For example, if he was seen talking to another character in a friendly way, his mate might have thought he was being unfaithful. Another reason could be differences in their long - term goals. If Harry's mate has a very different vision for their future, like wanting to live a quiet life while Harry is more adventurous, this could lead to rejection.
One possible reason could be that in the fanfic, his parents might be depicted as having made some big mistakes in the past that directly affected Harry in a negative way. For example, they could have made a deal with a dark force that put Harry in danger later on.
In some fanfictions, his parents might be forced to abandon him due to a powerful enemy threatening their family. They may believe that by leaving Naruto alone, the enemy will not target him immediately, thinking he's just an ordinary orphan.