I'm not sure specifically as I haven't read that particular fanfic. But it could potentially be about some form of noble or magical lordships that Harry discovers during the trial in the fan - created story.
Fanfiction in general, including 'harry potter revealed', helps to build a community. People who write and read this fanfiction can discuss their ideas, interpretations, and what they like or dislike about it. This creates a sense of belonging among fans.
One of the secrets could be about hidden relationships between characters. For example, a secret friendship that was never shown in the original books but explored in the fanfiction.
His best friends, Hermione and Ron, would surely help. Hermione could contribute with her intelligent ideas and knowledge of magic for construction. Ron would be there for the physical labor part, using his strength.
Sometimes, a character's secret identity in Harry Potter fanfiction is revealed through a slip - up. They might accidentally use magic in a Muggle - dominated area when they were supposed to be hiding their wizarding identity. Or they could say something that gives away their true allegiance in a heated moment.
One interesting aspect could be the exploration of characters' backstories that were not fully delved into in the original series. For example, we might learn more about the lives of minor characters or the hidden relationships between main characters.
One secret could be about the true nature of certain magical artifacts that were only hinted at in the original books. For example, the Marauder's Map might have deeper secrets like how it was enchanted to show not just the castle but also hidden passages that lead to other magical realms.
It gives a different perspective. By highlighting abuse, it makes readers think about the darker sides of the wizarding world that were not the main focus in the original books. It shows that not everything was perfect in Hogwarts or the wider magical community.