One way to develop the storyline could be to explore Percy's struggle with his new identity. Since Hades and Persephone are such complex deities, Percy might have a darker side to him. He could struggle with controlling powers related to the Underworld, like shadow manipulation or communicating with the dead. For example, in a school setting, he might accidentally let out some spooky manifestations when he's stressed.
Another aspect could be Percy's interaction with other demigods. They might be initially suspicious or even afraid of him because of his new parentage. He would have to prove himself and show that he's not like the typical 'evil' associated with Hades. He could form new alliances and rivalries based on this new identity.
Well, one way could be that Naruto, being the son of Hades, would have unique powers. He might be able to use his shadow clones in a new way, like sending them into the Underworld to gather information. His connection to Hades could also make him a target for other gods or demigods who are either afraid of Hades' power or want to use Naruto for their own gains. Maybe he would struggle to fit in at Camp Half - Blood at first because of his different origin compared to the normal demigods there.
A major theme could be identity. Percy has to come to terms with being the son of two very powerful and different deities. It's not like being the son of Poseidon where he has a more straightforward heroic image. Here, he has to figure out who he really is.
Well, one way to re - imagine their relationship is to make it more of a partnership. In the original myths, Persephone is often seen as a victim of Hades' abduction. But in fanfiction, we could see them as two powerful deities who came together by choice. They could be equal partners in ruling the Underworld, with Hades respecting Persephone's opinions and decisions more.
The main antagonist could also be an ancient and powerful spirit from the underworld that was sealed away long ago. Percy's presence as the son of Hades accidentally awakens this spirit. The spirit then starts to spread darkness and despair throughout the world of the demigods, and Percy has to find a way to stop it before it's too late.
Another option could be some rogue demigods who are jealous of the son of Hades' powers. They might form a group and try to cause trouble for him and Percy Jackson. They could be working with some minor gods who have a grudge against Hades, creating a complex web of enemies.
Well, it could be a wild adventure where Percy's demigod powers combine with Nick Fury's strategic mind. Maybe Percy has to use his water - controlling abilities to help Fury in some top - secret mission that involves underwater threats. For example, they might be facing a group of sea - based villains who are planning to attack major coastal cities. Percy's connection to the sea gods could give them an edge in this fight.
One idea could be Percy discovering his unique heritage as the son of Hades and Persephone and struggling to fit in among the other demigods. He might have powers related to the Underworld that set him apart, like the ability to control certain types of plants that grow in the Underworld. Another plot could involve him having to deal with the politics between the gods because of his parentage. For example, Zeus might be suspicious of him due to his connection to Hades.
You can start by giving her a distinct personality. Maybe she's shy because she's always been feared for her father's sake. Then, gradually show her growing confidence as she discovers her own strengths. For example, if she has the power to raise small skeletons as minions, at first she's scared of it, but later she learns to use it for good. Also, explore her relationships with other characters. Her friendship with Percy could be based on mutual understanding of being different among the demigods.
There might be a fanfiction where Persephone uses her powers to help Percy Jackson understand some of the deeper mysteries of the Greek world in the context of the Percy Jackson universe. This could involve her connection to Hades and how that affects the balance of power. For example, she could show Percy how to navigate certain dark areas that are related to Hades' domain.
Well, one possibility is that Naruto could have unique powers related to the underworld. For example, he might be able to control shadows in a way similar to Hades' control over the dead. Maybe he could use his underworld - based powers to fight against the evils in the Naruto world. He could also have a connection to nature like Persephone, which would add an interesting twist to his character.