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.
Well, one possible plot could be Percy struggling to adapt to his new status as Apollo's adopted son. He might have to learn new powers related to the sun god. For example, he could start to have an affinity for healing, which is one of Apollo's main domains. And he would face challenges from other demigods who are jealous or suspicious of his newfound connection to a major god.
Well, one possibility is that Percy could gain new powers related to Apollo. For example, he might learn to heal more effectively or have a connection with the sun. Another aspect could be his relationship with Apollo's other children. He'd have to adjust to a new family dynamic within the godly realm.
One possible plot could be Percy Jackson being chosen by Apollo to complete a special quest. Maybe he has to retrieve a lost artifact of Apollo that is crucial for maintaining the balance between the gods. Along the way, he might face various monsters and challenges, like fighting against the minions of a dark god who wants to use the artifact for evil purposes.
A plot could involve Naruto being sent to the Percy Jackson universe through some kind of magical accident. He meets Apollo, who is intrigued by Naruto's chakra and ninja techniques. They team up to stop an ancient evil that threatens both the ninja world and the world of the demigods. Along the way, Naruto has to adapt to the new rules and powers of the demigod world, while also teaching some of his ninja wisdom to Percy and his friends. There could be epic battles where Naruto's Rasengan combines with Apollo's solar powers to defeat powerful foes.
Another possible antagonist could be some of the more power - hungry and jealous demigods. They might not like that Percy has been adopted by Apollo and is getting special attention. They could try to sabotage his missions or spread rumors about him to turn the other demigods against him.
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.
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.
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.
One possibility is that Percy's relationship with the other demigods would change. Since he is now under the wing of Apollo and Artemis, some demigods might be jealous or curious. He could also become a sort of mediator between the two gods' followers. For example, if there were disputes between the Apollo - related campers and Artemis - related hunters, Percy could use his position to resolve them.