Perhaps there could be a plotline where Percy's mom's wizard heritage is somehow linked to the world of the gods. This could lead to a discovery that the two realms of magic and godly powers are more intertwined than anyone thought. It could also bring about a conflict where the gods are either threatened by her wizard powers or try to use them for their own purposes.
One possible plotline could be Percy's journey of grief and how he copes with the loss. He might become more withdrawn at first, then gradually find strength in his friends and his quest. Another could be his search for a way to bring his mom back, perhaps delving into dangerous magic or making deals with powerful beings. Maybe he also has to face the fact that his mom's death was part of a larger plan by the villains and he has to stop them from achieving their ultimate goal.
One possible plotline could be Percy's struggle with his new godly powers and how it affects his relationships. For example, his friends might be in awe or a bit intimidated by his new status.
One possible plotline could be Percy having to adjust to the unique rules and traditions of the hunters. For example, dealing with their vow of celibacy in a humorous or challenging way. Another could be Percy going on a special hunt with the hunters that involves a mythical creature not commonly associated with them.
One possible plotline could be their adventures in a new, undiscovered part of the mythological world. Maybe they stumble upon a hidden realm full of ancient and powerful creatures that they have to either befriend or fight.
Well, perhaps in this 'percy is an orphan fanfiction', there's a plotline where Percy is constantly bullied because he's an orphan. But then he discovers a hidden power within himself that not only helps him stand up to the bullies but also starts to unravel a mystery related to his family. Maybe he finds out that his parents were part of a secret organization and their disappearance was not accidental.
One interesting plotline could be them teaming up to rescue a captured demigod. They could use their unique abilities, Percy's water - related powers and Bianca's skills with a certain weapon or magic. Another plotline could be them exploring an unknown part of the mythological world together, facing strange creatures and ancient puzzles.
Perhaps a plotline where Percy has a different personality. Instead of being the brave and somewhat impulsive hero, he could be more reserved and calculating. This change in character would greatly affect his relationships with other characters and the way he approaches challenges in the story.
One interesting plotline could be Percy having to protect a high - profile celebrity from a mysterious and dangerous stalker. He uses his unique skills and knowledge to outwit the stalker at every turn.
One possible plotline could be Percy and Apollo facing challenges together in the world of the gods. For example, they might have to battle a powerful new monster that threatens both the mortal and divine realms. Another could be Percy adjusting to his new relationship with Apollo, dealing with the different nature of Apollo compared to his previous friends. Maybe there are also plotlines where they explore different mythical places together, like the lost city of Atlantis or a hidden grove in Olympus.
Another plotline could involve Percy's relationships with other characters. Maybe he has to face some of his old friends who now see him as a threat because of his association with chaos. Or perhaps he forms new alliances with characters who are also on the side of chaos, but they have different motives.