In a fanfiction about Percy Jackson time traveling and Chronos, Percy may be forced to make a deal with Chronos. In exchange for getting back to his own time, he has to do something for Chronos. But Percy being Percy, he tries to outwit Chronos. He uses his wits and the help of some unexpected allies he meets during his time travels. This could lead to a series of thrilling adventures as Percy tries to fulfill the deal in a way that doesn't harm his world.
Percy could change the past and accidentally create a new future. For example, if he stops Chronos from a certain event, it might have unforeseen consequences for the demigod world he knows. He might return to his own time to find that his friends are different or that Camp Half - Blood has changed drastically.
One idea could be Percy accidentally travels back in time and encounters Chronos in his prime. Maybe he has to team up with some of the old - time demigods to stop Chronos from an early attempt at world domination. It would be full of action and adventure as Percy tries to use his modern skills in an ancient world.
He could potentially change some events in the past that had a big impact on his present life. Say, he could prevent some of the early attacks by monsters that made his life so difficult growing up. This would completely alter the course of his life and the lives of those around him. It's a really cool concept to think about how one small change in the past could have a huge ripple effect in the future.
In such a fanfiction, Percy might use his knowledge of the future to change some key events in the past. For example, he could prevent some of the earlier disasters or conflicts in the Percy Jackson universe. Maybe he'd try to stop the first encounter with a certain monster in a different way to avoid the chaos it caused.
He could meet his parents when they were young. Maybe he'd get to see his mother before she met his father and understand more about her life back then.
Well, in some fanfictions, Percy as the son of Chronos discovers a hidden realm that exists outside of normal time. There, he meets ancient beings who knew his father before he became a villain. He has to learn from them to prevent a future apocalypse related to time manipulation.
In many of these fanfictions, characters like Chiron, the centaur mentor, play important roles. Since Percy is now the son of Chronos, some of the Titans might also be common characters, either as allies or enemies depending on the plot. And of course, the gods of Olympus are likely to be involved as they have a connection to Percy's new identity.
In the 'Percy Jackson Disappears' fanfiction, perhaps Percy could be kidnapped by an unknown enemy. Maybe it's a new villain who has a vendetta against the demigods. This would lead to his friends, like Annabeth, going on a desperate search for him, facing many dangerous challenges along the way.
In fanfiction, Percy could be in the hospital because he was captured by an enemy and tortured. Now he's there being healed by the camp's healers or some advanced demigod medical technology. Another possibility is that he's having some sort of identity crisis related to his demigod status and it's causing him physical and mental stress, so he's in the hospital for both medical and psychological help.
Well, in this fanfiction, Percy's immortality could lead to some really interesting character development. He may start to feel lonely as he realizes that he will outlive all of his friends. This could cause him to be more withdrawn at first. But then, as he interacts with the students at Westover Hall, he might find new meaning in his immortality. He could start to see it as a way to protect others not just for a short time, but for as long as he exists. He could also form deep and lasting friendships with those who accept him for who he is, regardless of his immortality.
In the fanfiction, Percy might face new challenges related to his demigod status. Maybe he has to deal with the aftermath of the war, like rebuilding Camp Half - Blood or helping new demigods adjust.