Well, it could be. In the normal Harry Potter universe, we have a set timeline. But in fanfiction, anything goes. This concept might bring in new elements such as ancient magic that was lost over time and how Harry, being 2000 years old, has seen the rise and fall of different magical cultures. It's definitely not something you see in the original books.
Often, the old Harry Potter fanfiction was more focused on the core elements of the original series. They delved deeper into the relationships between the main characters like Harry, Ron, and Hermione. For example, there were many fanfictions exploring the budding friendship between them in the early Hogwarts years.
Maybe it could be an ancient magical being like a centaur. Centaurs are known for their knowledge of the stars and ancient magic. They might take Harry under their wing and teach him old magic that has been passed down through their generations.
The character could be introduced as a new neighbor to one of the main characters. Let's say a 31 - year - old witch moves in next to Harry. She is mysterious at first, but as the story unfolds, we learn that she has a special connection to an old dark magic incident that Harry and his friends are currently investigating. This way, she becomes an integral part of the story gradually.
One could be a 31 - year - old Harry looking back on his Hogwarts days and realizing how much he has grown. He might be mentoring young wizards and witches, passing on the knowledge and skills he learned. For example, he could be teaching them how to face dark magic threats, using his own experiences as a guide.
Yes, it can be. The idea of melding the world of Harry Potter with the concept of the Great Old Ones adds an interesting and often dark, otherworldly twist. It attracts fans who like to explore different and more eldritch aspects within the familiar Hogwarts and wizarding world setting.
An old Harry Potter fanfiction about Tom Riddle could be about his time as a young wizard trying to gain followers. He was a very intelligent and manipulative character. Fanfictions might explore how he used his charm and intelligence to persuade other students to his way of thinking. Maybe he starts a secret club where they study dark magic together, which is a precursor to his later Death Eaters.
Well, it might not be entirely new. There are always various wild and creative ideas in the fanfiction world. However, the idea of Harry Potter being thousands of years old is quite distinct. It could potentially add a whole new layer of mystery and history to the familiar story. For example, it could change the relationships between characters and how magic has been passed down through the ages.
The Harry Potter novels have been around for quite some time. They started in 1997 and have become classics over the years. They've aged well and still have a huge fan base.