Finding good 'Fem Percy Jackson and Jason Grace' fanfiction can be a bit of a treasure hunt. AO3 is a great starting point as it has a large and active community of fanfic writers. The site allows for detailed tagging, which helps in filtering out the stories you might like. Additionally, you could also check out Tumblr. There are often fanfic recs (recommendations) on Tumblr blogs dedicated to the Percy Jackson fandom. You might find some really interesting and unique takes on Fem Percy Jackson and Jason Grace in the form of fanfics shared or recommended there.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). There are often a plethora of stories featuring Jason Grace and Percy Jackson. Just search for their names in the search bar, and you'll get a list of various fanfics. Some might be about their adventures together, while others could focus on their relationships with other characters in the Percy Jackson universe.
Some Tumblr blogs are also dedicated to Percy Jackson fanfiction. You can search for relevant tags such as #FemPercyJackson #JasonGrace #Fanfiction. These blogs might not have as many fics as the big fanfiction websites, but they often have unique and interesting takes on the pairing. You might also find some fanart related to the fanfics which can enhance your overall experience.
Fanfiction.net might also be a place to search. However, the quality and content can vary widely. You need to be a bit more patient when browsing there. Some stories might be well - written and really explore the relationship between Percy and Jason in interesting ways, while others might not be as good.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions on various themes, including gay relationships involving Percy Jackson and Jason Grace. Just use the search function on the site and type in relevant keywords.
Another theme is identity. For Fem Percy, there's often a struggle with being different in a male - dominated world of demigods. And Jason, with his own identity issues related to his Roman heritage and leadership roles. The fanfictions often delve into how they help each other come to terms with who they are, both as individuals and as a couple. For example, Fem Percy might learn to embrace her femininity while still being a powerful demigod from Jason's perspective, and Jason might find a new sense of purpose in his relationship with Fem Percy.
In Fem Percy Jackson and Jason Grace fanfiction, a common trope is the 'fish out of water' situation. For example, Fem Percy might be new to the Roman camp where Jason is from and has to adjust, and during that, their relationship develops. The 'rescue' trope is also seen often, where one saves the other from a dangerous situation. And then there's the 'shared destiny' trope, which ties their fates together in an interesting way, like they have to complete a quest together that only they can do.
Searching on Wattpad could also be fruitful. There are many amateur writers on there who might have created interesting Jason Grace hurt fanfiction. However, the quality can be a bit more variable compared to AO3. You might have to dig a bit deeper and use specific search terms related to the type of hurt (physical, emotional, etc.) and the relationships you're interested in within the story.
In Percy Jackson and Jason Grace fanfictions, Percy is often seen as more of a maverick. He has a very strong connection to the sea and his own unique sense of humor. Jason, on the other hand, is more of a traditional hero type in fanfictions. He's more rule - bound and has that Roman discipline. Their characterizations can be really different in fanfictions depending on the writer's take.
Archive of Our Own (AO3) is also a wonderful place to look for Jason Grace fanfiction. It has a large collection, and the tagging system makes it easy to find specific types of stories, like those focusing on Jason's relationships or his adventures.
Some Tumblr blogs dedicated to the fandom might also have fanfiction recommendations or even host some short fanfictions themselves. You can search for relevant tags like '#JasonGrace #PiperMcLean #Fanfiction' to find these blogs.