Well, 'oh hell no' is an expression of strong disapproval or refusal. In the context of 'Harry Potter fanfic', it might mean that someone really doesn't like a particular Harry Potter fan - created fictional work. Maybe they find the plot too outlandish, or it goes against their idea of the original Harry Potter universe.
Someone might say it if the fanfic contains really bad writing. Like if the grammar and spelling are atrocious, it can be a turn - off. Also, if the story is just plain boring or the characters are not well - developed.
There might be fanfics that focus on the backstories of minor characters. In 'hell harry potter fanfic', perhaps there are stories about the life of a house - elf we barely knew in the original books, like Dobby's early years at the Malfoy Manor.
Yes, there are. Some fanfics might focus on minor characters from the original series and give them more depth. For instance, a fanfic could explore the backstory of Neville Longbottom in great detail.
Another way is to follow authors who are known for writing great 'Harry Potter' fanfics. If you find an author whose work you really enjoy in 'hell harry potter fanfic', chances are their other works will also be good. They often have a consistent writing style and quality that you can rely on.
I'm not sure specifically as there could be many different interpretations in a Harry Potter fanfic with such a title. It might be about a place that is on the 'right side of hell', perhaps a unique magical location in the Harry Potter universe that has some connection to the concept of hell, like a liminal space where good and evil forces interact in an unexpected way.
First, you need to be well - versed in both universes. Read all the Harry Potter books and watch 'Oh Brother' if it's a movie or show. Then, come up with an interesting concept like a character crossover. Decide how the characters from 'Oh Brother' will interact with the magical world and its inhabitants. For example, will they be amazed by magic or will they be skeptical at first? Keep the essence of both the Harry Potter world (the magic, the houses, the dark vs light theme) and the 'Oh Brother' world (the family bond, the humor, the sense of adventure).
Since I haven't read this specific fanfic, it's hard to say. But it could feature the main trio - Harry, Hermione, and Ron. They often find themselves in strange and dangerous situations, and this 'right side of hell' concept could be another one of their adventures. Maybe they are joined by other characters like Neville, Luna, or some of the Weasley family members.
One possible plotline could be how the Dursleys face magical mishaps in their daily lives that drive them crazy. For example, maybe Dudley accidentally gets turned into a pig by a stray spell and the Dursleys have to deal with that chaos. Another could be that they are constantly haunted by strange magical creatures that are attracted to Harry's presence in their house.
Well, perhaps the arrival of Harry Potter in their lives could be a major factor. His presence might disrupt their normal, mundane existence. They are forced to take care of a wizard child while they are Muggles who seem to despise anything out of the ordinary. His magical outbursts and the constant reminders of the wizarding world that come with him could be making their lives a living hell.