Perhaps it's a curse or a spell gone wrong. In the world of PJO, there are many magical mishaps. It could be that someone intended to harm Percy and this was the result. Or it could be a side - effect of a powerful artifact he came into contact with.
It might also be a symbol of his evolution as a character. As Percy grows and faces new challenges, the tail could represent a physical manifestation of his changing nature. It could be a way for him to access new abilities or areas that were previously inaccessible to him, like deeper parts of the ocean or secret underwater realms.
It could be a group of fans who collaborate on the story. They might each contribute different parts or ideas. For example, one person could be good at writing action scenes, another at character development, and they come together to create this 'Percy has a tail' fanfiction.
One common theme is adventure. Percy is always going on some sort of journey or quest. Another is friendship, as he relies on his friends like Annabeth and Grover. And of course, there's the theme of power, especially related to Percy's unique abilities which might be emphasized more in fanfics about his tail.
The plot could involve Percy waking up one day and finding a tail instead of his legs. At first, he's confused and a bit scared. But then he realizes it gives him some new abilities, like super - fast swimming. He could then go on a quest where his tail is both an advantage and a hindrance. For example, it might be hard to move on land, but in water, he can out - swim any monster.
Well, perhaps Percy is a character in a magical world. He could have been cursed or exposed to some strange magic that causes him to grow a tail. Maybe it starts as a small, furry growth that he tries to hide, but as the story progresses, the tail takes on a life of its own and gives him unique abilities like climbing better or sensing danger.
One popular Percy Tail PJO fanfic is 'The Lost Hero's Quest'. It takes the characters on a new adventure filled with mystery and danger. Another great one could be 'Percy and the Underworld Revisited' which delves deeper into the relationship between Percy and the Underworld. There's also 'Tail of the Titans' that has an interesting take on the battles against the Titans from Percy's perspective.
It could be a symbol of a new power. Maybe it gives Naruto the ability to control scorpion - related things, like scorpion - shaped chakra attacks.
The tail could be a symbol of his uniqueness. Maybe it sets him apart from other characters in the fanfiction world. It might also have some magical properties, like being able to sense danger or hidden magic.
Well, his tail in fanfiction could be a sign of vulnerability too. Writers might use it as a way to show his softer side. For example, if someone were to grab his tail, it could make him feel really uncomfortable or even weak. It could also be a way for him to show affection in a non - human way, like wagging it when he's happy around Kagome.
Well, in Dragon Ball lore, Gohan's tail was a Saiyan trait. In this fanfiction, it might mean he has more access to his Saiyan instincts. Maybe he can transform more easily into a Great Ape or use some of the primal Saiyan powers that were associated with the tail.
In fanfic, a tail on Naruto might represent a connection to some ancient or forgotten part of his heritage. It could be that the tail is a physical manifestation of a long - lost bloodline ability. This could open up new storylines where Naruto has to discover and master this new aspect of himself. For example, he might need to find an old scroll or a mentor who can teach him about his tail and what it means. It could also lead to new relationships with other characters who are either intrigued or afraid of his new feature.