Maybe it could be a misunderstanding caused by some magical or otherworldly influence. For example, a spell makes Annabeth act out of character and Percy and Poseidon have to work together to break the spell and restore the true relationship. This way, it doesn't violate the core values of the characters and their relationships too much.
The plot could be developed in an alternate universe where the rules of relationships are different. However, even in this case, it should be carefully crafted. The writer could focus on the emotional turmoil and growth that comes from this situation. For instance, Annabeth could quickly realize her mistake and struggle to make amends, while Percy has to deal with his feelings of betrayal and forgiveness. But still, it has to be done in a way that respects the original spirit of the characters.
In most fanfiction concepts like this, it goes against the established relationships and character traits in the original works. Annabeth and Percy have a strong bond, and such a plot would be a major deviation. It could lead to a lot of negative reactions from fans who are attached to the original relationship.
Well, it's possible that such a fanfiction exists given the creativity of fanfiction authors. They like to experiment with different relationship dynamics. But considering the popularity and the nature of Annabeth and Percy's relationship in the source material, this would be quite a shocker. It could also attract a lot of criticism from fans who are attached to the original relationship, while others might be interested in seeing how such a different plot would unfold.
There might be such fanfiction out there in the vast world of fan - created content. However, this kind of plot goes against the original relationship dynamics in many fans' eyes. It's important to note that fanfiction can cover a wide range of scenarios, some of which may be controversial or not in line with the general perception of the original story.
Imagine Percy and Annabeth get sent on a diplomatic mission to another demigod camp. They have to work together to convince the other camp to form an alliance. Along the way, they face many challenges, not just from the other camp but also from within themselves as they have different ideas on how to approach the situation. Through this experience, they learn to communicate better, trust each other more, and their friendship reaches a new level.
They can develop their relationship by having deep conversations. For example, sharing their fears and dreams about their future together. Maybe Percy tells Annabeth about his insecurities of not being a good enough husband sometimes, and Annabeth reassures him.
Their relationship could be developed through more shared secrets. For example, Poseidon could reveal a long - hidden prophecy about Percy that only he knows. This would create a deeper bond of trust between them.
I don't have statistical data on the prevalence of such fanfiction. But considering the nature of the Percy Jackson fanbase which is often made up of younger readers and those who love the positive themes in the books, this type of fanfiction that involves cheating and potentially inappropriate content is probably not very common. Most fanfiction in this fandom focuses on things like new quests, character growth, or positive interactions between the beloved characters.
One way is to show his more vulnerable side. Maybe he's facing a threat that not even his power can easily overcome, and Percy has to help him in a way. This would make him more relatable.
Percy could be furious. He has always been loyal to Annabeth, and this betrayal would be a huge blow. He might immediately cut off all contact with her and go off on his own for a while to cool down.
In most fanfics, this is often just a fictional and sometimes out - of - character plot device. There's no real evidence within the official Percy Jackson canon for such a thing, but in fan - created stories, it could be based on the author's desire to create drama. However, it goes against the core relationship we know from the original books.