Most of the legitimate platforms require you to pay for the e - book. However, your local library may offer it for free in digital format if they have a license for it. You can check with them and see if you can borrow it electronically, which is a great legal way to read the book without paying.
You can try some legal e - book platforms like Amazon Kindle. They often have a wide range of novels available for purchase and reading. Another option could be the official website of the publisher, if they offer online reading services.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions including those for 'House of Hades'. Just search for 'House of Hades' in the search bar on the site.
Some forums dedicated to Rick Riordan's works might also have fanfiction shared by the community. You can search for ones that focus on 'The House of Hades' and look for the demigod - related stories there.
There are fanfics that take a different perspective on the events in 'The House of Hades'. Maybe a fanfic where the villains have more backstory or a different motivation. It really depends on what you're interested in. If you like action - packed stories, look for ones with intense battles in the Underworld. If you're more into character development, find fanfics that focus on how the characters grow and change during their time in the House of Hades.
The seven characters from the relevant series are probably the main ones in 'The Seven Read House of Hades Fanfiction'. They would be the focus as they navigate through the events and challenges in the House of Hades. It's possible that the fanfic author might also give more focus to certain characters among the seven, depending on the plot they are weaving.
I recall reading a fanfic called 'Hades' Hidden Treasures'. It was set in the House of Hades and explored some of the uncharted areas of the underworld. The author did a great job of creating a sense of mystery and danger, which made it really engaging. It also had some unique interpretations of the magic system within the House of Hades.
One thing that could happen is that they are either amused or offended by how they are portrayed. If the fanfiction writer has a very different view of their personalities, it could be quite a shock for them. For instance, if Leo is made out to be much more serious than he actually is in the books, the real Leo might find it really strange. Or if Piper is given some new powers in the fanfiction that don't exist in the original, they would have to figure out how that would work in the context of their world.
It would be quite an interesting scenario. The gods might be amused by the creative interpretations of their stories and characters in the fanfiction. Some might be offended if the portrayals don't match their self - perceived grandeur. For example, Zeus might not like being depicted as a bumbling fool in the fanfic.