One possible scenario could be that Harry leaves his parents due to a mysterious prophecy that he needs to fulfill away from them to keep them safe. Another could be that he discovers a hidden power within himself that he can't develop while staying with his parents, so he decides to leave.
Perhaps in the fanfiction, there is a threat from a dark wizard that targets Harry's family. Harry, being a brave character, leaves his parents to draw the danger away from them. He might then embark on a journey to find a powerful ally or a magical object that can help him protect his family in the long run.
Another scenario might be physical abuse. His parents could be shown as using force against Naruto for minor mistakes. This would not only cause him physical pain but also make him fear his own parents. It could also lead to Naruto being more rebellious in some ways, as a form of self - defense mechanism.
One possible scenario could be that Naruto leaves due to a misunderstanding with Sasuke. Maybe Sasuke says something harsh about Naruto's skills and Naruto, in his pride, decides to leave. Another could be that Naruto feels he's holding the team back in some way and leaves to train on his own in order to become stronger without being a burden. Or perhaps there's a mission gone wrong where Naruto is blamed for something he didn't do, and he leaves out of a sense of unfairness.
One possible scenario could be that Harry faked his death to escape from a powerful dark wizard who was targeting him. He might have used a powerful concealment spell or potion to make it seem like he was dead. Another scenario could be that he faked his death to go undercover and gather information about a secret organization within the wizarding world.
Well, perhaps in the fanfiction, Harry hears his parents will return as spirits to protect Hogwarts. They could be bound to the castle in a way that only Harry can sense. Or it could be that Harry hears his parents will be able to communicate with him through a magical object like a special mirror. This mirror might show their images and convey their messages. Also, it's possible that Harry hears his parents will have a role in helping him understand a hidden power within himself.
Perhaps Tony is leaving because of a conflict. In the fanfiction, there might be some sort of power struggle or disagreement that forces him to go. He could be leaving behind a group that he was once a part of, and his departure marks the end of an era for them.
One interesting scenario could be Naruto getting to have a heart - to - heart conversation with his parents in a dream world created by a powerful jutsu. In this conversation, they share family secrets and advice that helps Naruto in his real - life ninja journey.
Voldemort could still be the main antagonist. Even if Harry leaves his parents early, Voldemort might be hunting for him due to the prophecy. His dark presence would be a constant threat, driving Harry's actions and the plot of the fanfiction.
Perhaps Harry faked his death with the help of his friends. Hermione, being extremely intelligent, could have come up with a plan. They might have used polyjuice potion to create a false body that looked like Harry's dead body. This would mislead the enemy and give Harry the element of surprise in the ongoing battle against the dark forces.
One possible scenario could be that Harry uses Polyjuice Potion to create a false body that appears to be his dead self. He might do this to deceive Voldemort and his Death Eaters, giving him the element of surprise to strike back later. Another scenario could involve elaborate magical illusions created with the help of his friends, like Hermione's extensive knowledge of spells and Ron's courage in the face of danger. They could set up a staged death scene that looks very real to the outside world.
Well, in this kind of fanfiction, it might be that a new, unknown enemy has developed a mind - trapping curse specifically for Harry. This enemy could be someone who wants to use Harry's knowledge of the wizarding world for their own evil purposes. So they trap him in his mind to extract information. Also, it could be related to some side - effects of a powerful magic Harry was trying to use. For example, if he was trying to access some deep, forbidden magic, it backfired and trapped him in his own mind.