Perhaps in the fanfiction, Percy dreams of Kelly in a perilous situation. This could then drive the plot as he tries to prevent this situation from becoming a reality in the real world of the story.
Well, they could go on an adventure together. Maybe face some mythical creatures that are threatening their world. It would be really cool to see how Percy uses his skills and experience to protect his daughter and teach her about the world of gods and monsters.
There could be various interpretations of Percy's dream about his daughter Kelly in fanfiction. Maybe in the fanfic, this dream is a premonition of something important related to Kelly's future, like a special power she will develop or a great adventure she'll embark on.
Maybe there would be some initial tension between Percy and Annabeth's daughter. She could be rebellious and not want Percy interfering in her life at first. But as time goes on, they could form a strong bond. They might go on a quest together, where Percy has to save her from a dangerous foe, and that's when their relationship really starts to grow and develop into a more trusting and loving one.
In this fanfiction, Percy might stand up to his bullies. He could show newfound courage and use his skills to outwit them.
Well, in this fanfiction, Chucky might initially be shocked to meet his daughter. He could try to protect her from the dark forces he's associated with. Maybe he'd teach her some of his unique survival skills.
In this fanfiction, Percy might be shocked at first to see his younger self. He could offer advice to his younger version, like how to better handle the challenges in the magical world. Maybe he'd warn his younger self about certain enemies or mistakes he made in the past.
Well, perhaps Percy's future self comes back to warn him about something. It could be about an upcoming danger that he needs to avoid. Or maybe his future self has some wisdom to impart, like how to better handle his relationships with his friends or family. This encounter could change Percy's perspective on a lot of things in his current life.
Well, perhaps Percy starts seeing things that aren't there. Maybe he gets really paranoid and starts suspecting his friends of things they didn't do.
Hestia could use her power over the hearth to protect Percy and his friends. For instance, when they are in a dangerous situation, she might create a protective barrier around them using the warmth and energy of the hearth.
In such a fanfiction, Percy might help Hades with some internal underworld issues. For example, dealing with rebellious spirits. Since they are friends, Percy could use his unique abilities and knowledge of the modern world to assist Hades in modernizing certain underworld operations, like record - keeping. It could also lead to interesting interactions with other underworld deities who might be suspicious of this new friendship.