In this kind of fanfiction, they might have an adventure together. Maybe they'll face a new monster that they haven't encountered before. For example, a mythical creature from a less - known part of Greek mythology.
Their relationship is likely to be complex. They are friends and comrades who have fought side by side many times. So, there's a strong bond of loyalty between them.
In a fanfiction, Percy could become Annabeth's father in a magical realm where the rules of family and time are distorted. Maybe a powerful god or goddess messes with their destinies. Percy would then have to navigate the new relationship while still dealing with his own heroic duties. He might struggle to balance protecting her as a father and respecting her as an independent demigod who is used to taking care of herself.
The relationship could start with Percy and Annabeth being overprotective parents. Percy might be constantly worried about the baby's safety near water, while Annabeth would focus on teaching the baby knowledge and wisdom. As the baby grows, they could start to have little adventures together. For example, the baby could go on a mini - quest with them around Camp Half - Blood, which would strengthen their bond.
Writing or seeking fanfics about such explicit content is not appropriate as it goes against the family - friendly nature of the original 'Percy Jackson' series. We should focus on the positive aspects like their friendship and adventures in the books.
A popular one is 'Percy and Annabeth's Adventure Beyond'. It explores what could happen if they went on a new adventure in a different part of the mythological world. The description of the new settings and how Percy and Annabeth interact with the new challenges is really engaging.
There are some out there. You can try searching on fanfic platforms like Archive of Our Own (AO3). They usually have a wide range of fan - created stories, and by using the right tags such as 'Percy Jackson', 'Annabeth' and 'lesbian', you might be able to find some interesting ones.