Well, perhaps Percy shows up at his own funeral in the fanfiction because he wasn't really dead. He might be confused as to why everyone thought he was gone and start revealing secrets that change everyone's perception of his 'death'.
One possibility in 'percy crashes his funeral fanfiction' is that Percy has been on a secret mission. When he returns and crashes his funeral, his friends are initially shocked and then overjoyed. But his enemies who thought they got rid of him are now in a panic. This event could be a turning point in the story, with Percy now having to deal with the fallout of his supposed death and the new threats that have emerged in his absence.
His friends could be involved, like Annabeth. She might be mourning at the funeral and then be extremely surprised and happy when Percy shows up. Grover could also be there, and he'd probably be the first to give Percy a big, emotional hug.
In a 'batman crashes on themyscira' fanfic, the story could start with Batman testing out a new experimental Bat - vehicle. There's a miscalculation or an attack during the test flight that sends him crashing onto Themyscira. The Amazons, led by Wonder Woman, are cautious. Batman, being the resourceful hero he is, tries to adapt to this new environment. He might learn about their culture while also trying to find a way to get back home and prevent any harm that his presence might bring to the island.
In a 'Peter Parker Funeral' fanfiction, the story might start with the discovery of Peter's death. It could be due to a powerful villain finally getting the upper hand. His Aunt May is heartbroken. The funeral could be a very private affair, with only his closest friends and family. But as the news spreads, the whole city starts to remember Spider - Man's deeds. There could be a lot of flashbacks in the fanfiction, showing how Peter grew into the hero he was.
One possibility is that Percy trains his powers with the help of his friends. They could create special scenarios or obstacles for him to overcome, which in turn helps him to develop his powers further. His powers could also start to evolve in unexpected ways during this training process.
The plot could involve Percy having an accident during a battle. Maybe he's fighting a powerful monster and gets thrown against a hard surface, resulting in broken ribs. His friends then have to figure out how to get him medical help in the middle of their adventure.
One possibility could be that all of Gotham comes together to mourn Batman. The city he has long protected is in shock. Villains might even show a moment of respect. Robin could be giving a eulogy, reminiscing about their adventures together and how Batman inspired him to fight for justice.
In a 'naruto funeral fanfic', it could be that Naruto succumbs to an incurable illness that he has been secretly fighting. The Hidden Leaf Village is thrown into mourning. His friends and family would recall his most memorable moments, and his funeral would be filled with tributes from all those whose lives he had touched, from the smallest civilian to the mightiest ninja.
In a fanfiction, when Percy reunites with his mom, it could be a very emotional moment. Maybe Percy has just come back from a dangerous quest. His mom would probably hug him tightly, tears in her eyes. She might cook his favorite meal right away, and they would sit down and Percy would start telling her all about his adventures.
One possibility could be that Percy's friends rally around him. They might take turns helping him with daily tasks like getting to class or bringing him food. His accident could also lead to some self - discovery, as he has to deal with being immobile for a while.
It could be that Percy drinks some sort of potion by mistake that has a strange side effect on his body. As he continues on his journey, he starts to feel the urge but can't hold it in time. This leads to an embarrassing moment that he has to overcome. His friends might help him out, or it could be a source of conflict if some of them are not so understanding. It could also be a learning experience for Percy about being more careful and aware of what he consumes.