Well, 'harry potter is a de fanfiction' could be a misphrased or misinterpreted statement. Harry Potter is a highly successful and original fictional series. Fanfiction usually refers to stories written by fans based on existing works. Potter has inspired a ton of fanfiction, but it itself is not fanfiction. Maybe 'de' is a wrong or unclear addition here. It could be that the person who said this has some very different understanding of what constitutes an original work versus fan - made work.
One possible reason could be that he might feel abandoned. Growing up without them, he could resent the fact that they left him an orphan. He might think that if they were really so great, they would have found a way to survive and be there for him.
Yes, there might be some extremely dark and out - of - canon fanfictions out there with such a disturbing premise, but it goes against the general nature of the original story where Harry's parents loved him deeply. However, in the vast world of fanfiction, people can create all kinds of strange and often inappropriate scenarios.
It can contribute by adding new perspectives. For example, it might make fans think about the parents' generation in a way they hadn't before. But it also needs to be done tastefully.
One possible fanfiction idea could be that Albus Severus Potter is accidentally de - aged by a misfired spell in Hogwarts. He then has to navigate the school as a much younger version of himself, causing all sorts of chaos and confusion. His friends and teachers are initially shocked but then have to figure out how to reverse the spell.
Harry Potter himself is quite popular. Since he's the main character, seeing him in a de - aged state offers a lot of storytelling possibilities. Hermione Granger is also a common choice. Her intelligence at a younger age could lead to different adventures. And then there's Draco Malfoy. Writers like to explore his character when de - aged as it gives a chance to rewrite his early interactions with the other characters in a new light.
On a more magical level, reviving the dead is against the natural order of things in the wizarding world. This could attract unwanted attention from magical authorities or even dark forces. Some might see Harry's act as a dangerous precedent and try to either stop him or use his new - found power for their own evil purposes.
In some fanfictions, Harry might use extremely powerful and ancient magic. Maybe he discovers a long - lost spell during his adventures that has the power to reverse death. For example, he could find a spell hidden in a forgotten corner of the Hogwarts library that was created by a powerful wizard in the past but was deemed too dangerous to be used.
There could be old friends from their school days. For instance, a classmate who knew some deep secrets about them. Maybe this friend was also in the same secret club or society that his parents were part of, and after their deaths, this friend tried to keep an eye on Harry from the shadows.
Well, there's a fanfiction called 'Harry's Second Childhood'. In this story, Harry is de - aged and it delves into how his relationships with his friends like Ron and Hermione change. They have to protect him while also dealing with the mystery of what caused his de - aging. Also, 'Back to the Start, Potter' is quite good. It takes Harry back to a younger age and explores different paths his life could have taken from that point.