One common theme is self - discovery. Even though Harry is forced to go, he still finds out more about himself and his powers at Hogwarts. Another theme is the idea of fate versus free will. He's forced, but he still has choices to make once he's there. For example, he can choose which friends to make or which classes to focus on.
One reason could be a prophecy. In the wizarding world, prophecies often drive events. Maybe there's a new prophecy that says Harry must be at Hogwarts at a certain time for some great event to occur. So, the magical community, in an effort to fulfill the prophecy, forces Harry to go. It's like they are trying to shape the future according to the words of the prophecy.
One popular 'Harry Forced to Go to Hogwarts' fanfic might be one where Harry's relatives are threatened by some magical force if they don't let him go. In this kind of story, it could add an extra layer of drama. Maybe there's a magical contract that was made before Harry was left with the Dursleys, and if they break it by not allowing him to Hogwarts, there will be dire consequences for them. It makes for an exciting read as we see Harry's journey start in a different way than in the original books.
One possible plotline could be that Harry initially resists going to Hogwarts because he's afraid of leaving behind his only connection to his normal life, like his aunt and uncle's house which, despite being horrible, is still the only home he's known. Another could be that some dark force is trying to prevent him from going to Hogwarts, but he's being forced by Dumbledore or some other powerful figure who knows it's crucial for his safety and development. For example, Voldemort could be using some magic to make Harry not want to go, in an attempt to keep him from learning magic and becoming a threat.
One common theme is friendship. Female characters often form strong bonds with each other. Another is self - discovery, as they figure out their magical abilities and identities within Hogwarts. Romance can also be a theme, like a girl's first love at Hogwarts.
I haven't come across any myself. But the world of fanfiction is so huge that there could potentially be some out there. You should search for it on fanfiction platforms.
One common theme is power. Since Hades is a powerful god, Harry might have new and extraordinary powers in these fanfictions. Another theme could be a struggle with identity, as Harry has to come to terms with being the reincarnation of such a significant figure.
One common theme is self - discovery. Harry often has to figure out the extent of his new powers and how to control them. For example, in many fanfictions, he discovers he can access ancient magic that was previously unknown to him.
In many of these fanfictions, a common plotline is the exploration of the emotional turmoil that both Harry and Ginny go through. Harry might be conflicted between his sense of duty and his own feelings for Ginny. Ginny, on the other hand, may have to deal with the loss of agency in her relationship. There could also be a plotline where the wizarding laws and traditions play a significant role. For example, they might have to navigate through some ancient laws that enforce the marriage. And sometimes, there's a plotline where the forced marriage is part of a larger conspiracy in the wizarding world, which Harry and Ginny have to uncover and stop while also dealing with their relationship problems.
There are 'Harry Potter closed Hogwarts' fanfictions because it offers a new and interesting scenario. It allows writers to explore different aspects of the Hogwarts world that we don't usually see. For example, how the characters interact when they are cut off from the outside world.
Well, a common theme is secrecy. Since he's being trained before Hogwarts, it's often a secret from the wizarding world at large. This secrecy can lead to a sense of mystery and danger. Also, the theme of self - discovery is big. Through this pre - Hogwarts training, Harry learns more about himself, his heritage, and his potential in the magical world. He may also face early challenges that shape his character in ways different from the original story. For example, he might have to deal with a dark wizard who is after him even before he gets to Hogwarts.