In some of these fanfictions, the mortals' discovery might lead to Percy having to protect them from other mythological threats. Since they now know about the demigod world, they become targets. Percy then has to form an unlikely alliance with the mortals to keep them safe. Also, the mortals might start worshipping Percy in a way, which he is really uncomfortable with as he's just a regular guy (well, as regular as a demigod can be) at heart and doesn't want that kind of attention.
One interesting plot development could be that the mortals either try to use Percy's demigod status for their own gain, like getting him to solve their problems. For example, they might ask him to find lost treasures thinking his powers would make it easy. Another could be that the mortals are initially in disbelief and Percy has to constantly prove himself, which leads to some comical situations as he shows off his abilities in modern day settings. And some might fear him and try to drive him out of town, creating a conflict for Percy to deal with.
In some fanfictions, Paul could end up getting involved in the demigod world himself. Maybe he discovers he has some latent powers or a connection to the gods. This would completely change his perspective on life and his relationship with Percy. He could become a mentor figure for Percy in the mortal aspects of dealing with his demigod status.
Some of his friends could also be open to the idea of the mortals knowing. They might see it as a chance to educate the mortals about the demigod world and promote co - existence. Grover, for instance, might be more sympathetic towards the mortals and want to help them understand Percy's situation better.
Well, one possible plot development could be that the Seven initially don't believe it. They might think Percy is joking or just going through a rough patch. But as they start to notice his withdrawn behavior, his lack of care for his own safety during quests, they realize the seriousness. Then they would probably try to surround him with love and support, and maybe even seek help from the gods, like asking Aphrodite to restore his love for life or Apollo to heal his mental state.
Yes, there are many. You can find them on various fanfiction websites. Some might explore Percy Jackson in an imperial or demigod - like role in new and exciting adventures that the original series didn't cover.
One possible plot development is that the gods gather to hold a trial for the abuser. They would bring in witnesses, and Percy would have to testify about what happened to him. This would be a very emotional and intense scene.
One idea could be that the forgotten demigod discovers a hidden power within themselves that is related to an ancient and forgotten god. This power could set them on a journey to find out more about their heritage and also put them in a position to save the demigod world from a new threat.
Perhaps Percy discovers a hidden prophecy that involves him sacrificing something dear to him to save the demigod world once and for all. This could lead to a lot of internal struggle as he decides what to do. In the fanfiction, he could journey to places never before explored in the original series to find answers.
Perhaps a story where Percy gets transported to a different era in the demigod world. He could be in the time when the first demigods were discovered and has to deal with the primitive and different rules and threats of that time. He might also learn some long - forgotten secrets about his own powers.
The plot could develop in many ways. For example, Percy could reject the Olympians' initial offers of help out of pride. This could lead to a stand - off where the Olympians have to find more creative ways to assist him without offending his pride. Or perhaps a new enemy emerges, seeing Percy's homelessness as a sign of weakness, and the Olympians and Percy have to team up to defeat this new threat. Along the way, Percy might also start to form a closer bond with some of the Olympians, leading to new alliances and a change in the power structure of Olympus.
One interesting plot development could be that during the duel, they accidentally discover a new power or ability. For example, Percy might find a new way to control water that is triggered by the intensity of the duel with Annabeth.