The reader - character can influence the storyline by their choices. For example, if they choose to befriend a certain group of students, it can change the social dynamics at Hogwarts. They can also influence it through their academic performance. If they excel in a particular subject, it might lead to new opportunities or quests within the fanfic.
Well, there's the 'Sorting Dilemma' trope. Since the reader is new to Hogwarts, there's often a big deal made about which house they'll be sorted into. Some fanfics also have the 'Hidden Talent' trope. The reader - character suddenly discovers they have a unique magical ability that no one else has. And then there's the 'Mystery at Hogwarts' trope. Strange things start happening at the school and the reader has to solve them.
One interesting 'Reader Goes to Hogwarts' fanfiction could be the one where the reader has unique magical abilities that are not common in the original Hogwarts world. For example, they can control time in a different way than Hermione's time - turner. Another great one might be where the reader is sorted into a house that they never expected and has to adapt to the new environment and the values of that house.
You can start by looking on popular fanfiction websites like Archive of Our Own (AO3) or Fanfiction.net. Use the search function and type in 'Reader Goes to Hogwarts'. Then, you can sort the results by popularity or rating. Reading the reviews left by other readers can also give you an idea of which ones are worth checking out.
Well, it could be that Percy has a hard time adjusting to the wizarding world at first. But then he meets a mentor figure who helps him understand his place in Hogwarts and he starts to thrive. He might even join the Quidditch team and become a star player.
In this fanfic, Ciel could potentially be sorted into a Hogwarts house, say Slytherin because of his cunning nature. Then he would have to navigate the politics within the house while also exploring the secrets of the castle. He could also get involved in some kind of mystery that threatens Hogwarts and use his unique skills to help solve it.
Well, it could be about Naruto arriving at Hogwarts and being confused by all the magic there. Maybe he tries to use his ninja skills in a world full of wizards and witches.
One popular 'bts goes to hogwarts fanfic' is 'The Magic of BTS at Hogwarts'. It's really interesting as it combines the unique personalities of BTS members with the magical world of Hogwarts. For example, Jin might be in the Gryffindor house, showing his brave side while also being the 'worldwide handsome' in the wizarding world.
The sorting ceremony is often exciting. Imagining which Hogwarts house each BTS member will be sorted into is really cool. Like, will RM be in Ravenclaw for his intelligence? Another exciting part is when they face magical challenges together, just like how they face difficulties as a group in real life.