The plot could involve Percy's journey to discover why Hera adopted him. Maybe there's a prophecy that only Hera is aware of, and Percy is the key to fulfilling it. As he tries to figure this out, he travels to different places in the mythological world. Along the way, he meets old friends and new enemies. His relationships with his friends from Camp Half - Blood could be strained as they don't understand his sudden change in allegiance. But in the end, Percy might come to terms with his new role and use it to save the world in a way that no one expected.
One possible plot could be Percy's struggle with his new identity. Since Hera is the goddess of marriage and family, Percy might find himself in a very different family dynamic. He could be thrust into the middle of godly politics more than ever as Hera's adopted son. For example, he might have to deal with the jealousy of other gods' children who see him as having an unfair advantage.
Well, perhaps the story could focus on Percy's growth under Hera's tutelage. Hera might try to mold Percy into a more 'proper' hero in her eyes. This could lead to Percy having to learn new skills and ways of thinking. He might also have to face challenges that are specifically designed by Hera to test his loyalty and worthiness. And of course, there would be his interactions with other characters from the Percy Jackson universe who are both confused and intrigued by his new status.
Well, perhaps in a fanfiction, there's a spell or some sort of magical mix - up that causes Percy and Hera to share a kiss. This kiss could then set off a chain of events. For example, it could create a strange bond between them that allows Percy to see into Hera's memories. He then discovers a long - forgotten secret about the gods that he has to use to save the world, all while trying to keep his relationship with Hera a secret from his fellow demigods who would be horrified at the thought.
One possible plot could be Percy finding himself in a strange situation where he is made Hera's husband against his will. He might then have to deal with the politics and power plays in the Olympian world as Hera's consort. He could try to find a way to break this strange bond while also facing the wrath of other gods who are either jealous or suspicious of his new position.
One possible plot could be Percy discovering his new parentage of being the son of Zeus and Hera. He might struggle with the new identity as it goes against what he previously knew. For example, he could face challenges from the other demigods who are suspicious or jealous of his new status. He then has to prove himself worthy of this new heritage while also dealing with the complex politics among the gods.
A possible plot could involve Percy being adopted by Hera and suddenly having access to new powers or abilities that come with being associated with her. But these powers come with a price. He has to perform certain tasks for Hera. Along the way, he meets other characters from Greek mythology that he wouldn't have interacted with otherwise, like some of Hera's more loyal servants or creatures. This could lead to all sorts of adventures and challenges as Percy tries to balance his old life and his new one under Hera's wing.
A plot could be that Percy is given a prophecy that involves him having to form a new kind of family unit. He decides that adopting Thalia is part of fulfilling that prophecy. But in order to fully embrace this new family, they need to go on a journey to different mythological realms. In each realm, they face different challenges that test their relationship. For example, in the Underworld, they have to deal with Hades who is not too happy about their new arrangement. This forces them to rely on each other and grow closer as they overcome these obstacles.
Well, one possible plot could be Percy discovering new powers. Since Hecate is the goddess of magic, Percy might learn magical abilities he never knew he had. Maybe he starts to see magic in everyday things in a way he didn't before. For example, he could make inanimate objects come to life or use spells to protect himself and his friends. Another aspect could be his relationship with Hecate. She might be a strict but loving mother figure, teaching him about the deeper mysteries of the demigod world and how magic fits into it all.
Well, one possibility could be that Percy, already a hero in his own right, finds himself in a situation where Apollo decides to adopt him. Maybe Percy has lost his connection to Poseidon for some reason, and Apollo sees his potential. Apollo could then train Percy in new ways of using his powers, not just related to water but also in areas like prophecy or archery, which are Apollo's domains.
In a 'Percy Jackson adopted by Artemis' fanfiction, perhaps Percy is exiled from Camp Half - Blood due to false accusations. Artemis, who has always been intrigued by Percy's courage, takes him in. With Artemis as his new guardian, Percy gets involved in the Hunters' battles against ancient monsters that threaten the world. He also has to deal with the jealousy of some of the other Hunters who are not happy about a male being in their midst.
Well, perhaps the plot involves Percy being hunted by various forces. The Olympians see him as a threat because of his Chaos lineage, and the minions of Chaos might think he's too much of an Olympian. He then has to form an unlikely alliance with some demigods and minor gods who believe in his unique potential. Along the way, he uncovers secrets about the origin of the gods and the true nature of the relationship between Hera and Chaos.
When it comes to his relationship with Hera herself, it would be complex. At first, Percy might be resentful or confused about being adopted by her. But as time goes on, he might start to understand her in a way no one else does. Hera could start to see Percy as a true son, and this could lead to a deep, if somewhat unusual, bond between them. Percy would have to balance this new relationship with his existing ones, and it could lead to some really interesting character development and story arcs.