They're popular because they offer an alternative view. People like to see what could happen if a main character breaks away from the traditional path. It gives a sense of freedom and exploration.
There might be a fanfiction where Hermione drops out. She could start her own magical research institute independent of Hogwarts. In this story, she might discover new spells and ways of magic that Hogwarts has overlooked. She could also recruit other dropouts or those who feel unappreciated at Hogwarts to join her in this new endeavor.
In some Harry Potter fanfictions, an author might create a character like Maya who is drop dead gorgeous to add an element of allure and mystery. For example, she might be involved in a romantic sub - plot, perhaps with a well - known character from the original series like Draco Malfoy. Her beauty could be both a charm and a curse as it attracts unwanted attention from dark wizards or jealous classmates.
Maybe he uses some powerful magic spells that he has learned secretly. For example, the Patronus charm could be used to fend off the Dementors which are the main guards in Azkaban. He might also get some unexpected help from his friends or some mysterious characters within the fanfiction world.
Yes, there are quite a few. Some combine the magical world of Harry Potter with vampire lore in really interesting ways. For example, they might have a character from the Potterverse encounter vampires and have to deal with their different powers and cultures. These fanfictions often explore how the rules of the wizarding world interact with the more shadowy and often violent world of vampires.
It could be Sirius Black. Since he has his own experience with Azkaban, he might know some secrets about the place. He could return in some form within the fanfiction and assist Harry in his escape, maybe by leading him through some hidden tunnels or using some special skills he developed during his time in prison.
It could be because of a conflict with the academy's rules. Natsu is a bit of a rebel. If the academy has strict rules that go against his sense of justice or freedom, he might decide to drop out. For example, if they forbid him from using his dragon - slayer magic in a certain way. Another reason could be that he feels he can learn more on his own or from other non - academy sources. He might think that the real - world experiences and challenges are better for his growth as a wizard than staying in the academy.
Once, I knew a girl who dreamed of becoming a dancer. She was extremely talented but came from a poor family. Her parents couldn't afford the expensive dance lessons. However, she didn't give up. She practiced secretly in an old warehouse every day. One day, a famous dance teacher happened to pass by and saw her dancing through the window. Impressed, the teacher offered to train her for free. Eventually, she became a well - known dancer.