Well, it could be a really interesting mix of two different mythologies. Maybe it would involve Percy Jackson's female version having adventures in the Norse realm due to her connection with Loki. She might use her demigod powers in new and unexpected ways there.
One plot idea could be that the fem Percy Jackson is transported to the Norse realm by accident. Loki discovers her and is initially suspicious but then becomes interested. They end up on a quest to find a powerful artifact that could save both the Greek and Norse worlds from a looming threat.
There's also 'When Percy Meets Loki: A Crossover of Worlds'. This fanfic focuses more on the cultural shock between the two characters. Percy is used to the straightforwardness of the Greek gods, while Loki's devious nature and the complex politics of the Norse gods are something new to him. It's an interesting read as it explores their relationship development in a unique way.
It could involve Percy having new and powerful abilities. Since Ouranos is a primordial god, Percy might have control over fundamental elements like the sky or the very essence of creation. For example, he could be able to manipulate the air in ways he couldn't before, like creating powerful storms or even pockets of different atmospheres.
In this fanfiction, Percy's character arc could be about him coming to terms with his new identity as the son of Horus. He would need to learn about Egyptian culture and mythology. His journey could take him to different places in the Egyptian mythological realm. He might discover new forms of magic or powers that are unique to this new heritage. His friends would also have to adjust to this new Percy, and there could be a lot of drama and adventure as a result.
Perhaps Percy has proven his worth through his unwavering loyalty and courage. Loki, who is used to seeing self - serving and deceitful behavior among the gods and mortals, is impressed by Percy's pure - heartedness. His actions of always protecting his friends and standing up for what is right might make Loki feel that he is worthy of respect, leading to Loki bowing to him.
In a Percy Jackson becomes a goddess fanfiction, the story could start with some sort of magical accident or a powerful spell that turns him into a goddess. As a goddess, Percy would have to adapt to a whole new way of life. He'd no longer be just a hero on quests but a divine being with a different set of rules. His powers would likely be enhanced, and he might gain abilities like shape - shifting or more powerful control over water. His journey would involve not only coming to terms with his new identity but also using his new powers to protect the world in a different way than he did as a demigod.
In this fanfiction scenario, Percy's relationship with other characters would change. His friends might be a bit more wary of his new - found charm powers. And he could have a whole new set of enemies among Aphrodite's rivals. Also, his love life would be even more complicated. With Aphrodite as his mother, there would be all kinds of expectations and potential love - related plots.
Well, it could involve Percy having some sort of special connection with the Fates. Maybe he can influence destiny in ways others can't. For example, he might be able to change the fates of his friends in dangerous situations, like when they're facing a powerful monster. This would make for an interesting dynamic as he'd have to balance the power he has with the natural order of things.
Well, it could involve Percy having a unique connection to the lost city. Maybe he discovers some ancient powers there that are tied to Atlantis' history. He could meet Atlantean characters who have been waiting for his arrival, thinking he's some sort of prophesied hero.
It could involve Percy facing new challenges related to the concept of balance. Maybe he has to deal with a Titan who is disrupting the natural order. For example, the Titan might be causing chaos between the mortal and the demigod worlds, and Percy has to find a way to stop it.