One possible storyline could be that Harry's experience with cancer makes him more resilient. He might have faced his own mortality at a young age, so when he enters the wizarding world, he has a different perspective on danger. For example, he may not be as afraid of Voldemort as others because he has already fought a life - threatening battle with cancer.
It could be that Harry's cancer diagnosis was kept a secret from the wizarding world. When he arrives at Hogwarts, he has to hide his condition while also dealing with the challenges of school. This could create a lot of internal conflict for him, as he has to balance his studies, making friends, and dealing with his health issues all at once.
In this fanfiction, it could be that Hogwarts has been shut down due to some great danger. Harry Potter then decides to gather a group of like - minded young wizards and witches. They form their own makeshift magical school in a hidden location. They have to learn magic without the guidance of Hogwarts' professors, so they rely on old magic books and their own wits to develop their magical abilities and face the threats that led to Hogwarts' closure.
Yes, it is possible. Fanfiction allows for creative reinterpretations of established universes. In this case, imagining Harry Potter as the founder of Hogwarts could lead to some really interesting storylines. It could explore how his modern - day knowledge and experiences would shape the school in its earliest days, perhaps introducing new spells or ways of teaching that are different from what we know of the original founders.
One possible reason could be that he was under the influence of a powerful dark magic or a curse that made him lose control. Another reason might be that he was tricked into believing Hogwarts was a threat to the wizarding world in some extreme way. Maybe a powerful enemy manipulated him to think that destroying Hogwarts was the only way to save everyone.
Hermione Granger could also be a possible Hogwarts heir. She is extremely intelligent and has a thirst for knowledge about Hogwarts' history and magic. Her Muggle - born status might seem to be a contradiction, but it could also be part of what makes her unique as the heir. She could bring new perspectives and use her vast knowledge to unlock secrets about the heir's role and the future of Hogwarts.
One possible storyline could be that Voldemort manages to attack the Dursleys' house before Hagrid can arrive to take Harry to Hogwarts. Maybe a Death Eater discovers Harry's location early on and Voldemort decides to end the threat immediately. Another could be that some dark magic from Harry's parents' past catches up to him as a baby, and he succumbs to it, never making it to Hogwarts. It could also be that a wizarding accident occurs in the Muggle world that involves Harry and results in his death, like a misfired spell from a rogue wizard in hiding.
One possible storyline could be a character getting hit by a powerful dark spell during a battle, which causes brain damage. Then the story could revolve around their struggle to regain their magical abilities and memories. For example, if Harry were to be the one with brain damage, he might have to relearn spells and how to interact with his friends in Hogwarts.
One possible storyline is that the Potter Manor is under attack by a new dark force. Harry and Ginny have to defend it using their skills and the help of their friends. Another could be that they are renovating the manor and discover some long - lost family secrets during the process.
A possible storyline is that Ruby Rose, with her combat skills, trains the students at Hogwarts in self - defense against the dark arts. Harry Potter might be initially skeptical but then realizes the value of her unorthodox methods.
One storyline could be that Harry, after the events in the wizarding world, decides to take a break and travels to Gotham. There he meets Bruce, and they end up teaming up to take on a new threat that combines magic and Gotham's usual criminal element. Maybe a villain who has somehow gotten hold of a powerful magical artifact and is using it to wreak havoc in the city.
One possible storyline could be that the hobgoblin is a magical creature that has been trapped in Hogwarts for centuries and Harry discovers it. The hobgoblin then teams up with Harry to uncover the secrets of Hogwarts that are related to a new dark threat. Another could be that the hobgoblin is a messenger from an unknown magical realm and it chooses Harry to be the one to communicate with its realm.