Well, a lot of Crowley x Aziraphale fanfics focus on their unique dynamic. Some fanfics might show them going on adventures together that are not part of the original story. These adventures can range from solving supernatural mysteries to just exploring the human world in a more in - depth way. And then there are those that focus on the emotional development of their relationship, like how they come to truly understand each other on a deeper level.
It's hard to say if they are extremely popular in a general sense. While there is a large and diverse fan community for Good Omens, not everyone is interested in this particular type of fanfic. Some fans might be more into the romantic or adventure - based fanfics about aziraphale and crowley.
One popular theme is their friendship. How they support each other despite being on different sides originally. Another is their shared experiences, like the times they've saved the world together.
One common plot is them going on adventures together outside of their usual angel - demon duties. For example, they might explore different parts of the world that are considered neutral ground. Another plot could be them dealing with the challenges of their relationship in a world where angels and demons aren't supposed to get along. And sometimes, there are fanfics where they work together to save the world in a more unconventional way than in the original story.
Well, in aziraphale x crowley overstim fanfics, a frequent theme is the clash of their two worlds. Their angelic and demonic backgrounds create a lot of tension and potential for overstimulation. It could also be about the new sensations and emotions they encounter when they step out of their normal comfort zones. For example, when they interact with human concepts in a more intense way than usual. This can lead to a series of events that test and expand their relationship.
There are many on FanFiction.net as well. Some might be set in alternate universes where Crowley's outburst at Aziraphale is a turning point in their relationship. It could be because Aziraphale made a decision that Crowley thought was too dangerous or against their unspoken bond. These fanfics can really dig deep into the emotions of the characters.
One common plot is that Aziraphale has to take care of Crowley after he gets injured in a battle against some other supernatural forces. This often involves a lot of tender moments as Aziraphale tries to heal Crowley using his angelic powers or with the help of some magical items.
Another reason could be jealousy. In some fanfics, they might both be interested in the same person or thing, and Aziraphale's actions might seem unfair to Crowley. Say there's a powerful artifact that Aziraphale wants to give to Heaven, but Crowley thinks it should be kept out of the hands of both sides. So Crowley yells out of frustration.
A common theme is also the exploration of their angelic and demonic natures. How do these aspects of them interact when they are together? There are also a lot of fanfics that focus on their adventures together, whether it's solving some mystery or going on a journey. It's all about the two of them and their dynamic.
One popular plot is them going on adventures together in the human world that are not related to the apocalypse. For example, they might explore different cultures and festivals. Another plot could be them dealing with their relationship in a more in - depth way, like how they handle their feelings for each other when there are angelic and demonic rules against it. Also, some fanfics might focus on their past, how they first met and what their early interactions were like.
You can start by looking on popular fanfic websites such as Archive of Our Own. Use the search function and type in 'Crowley x Aziraphale'. You'll get a list of relevant fanfics. You can also check fan communities on social media platforms like Tumblr or Reddit. People often share and recommend their favorite fanfics there.