Well, the drunk state of Stan can act as a catalyst. When drunk, Stan might be more vulnerable and honest. Kyle could be initially hesitant but gradually start to understand Stan's true feelings. Their relationship could develop through Kyle's growing acceptance of this new side of Stan.
Maybe Stan gets drunk during a camping trip with Kyle. In his drunken state, he becomes overly affectionate towards Kyle. Kyle is embarrassed but also finds it endearing. This could lead to a series of comical and heart - warming moments as they deal with Stan's drunken behavior and their emerging feelings for each other.
They are close friends and often have adventures together in the manga.
The charm lies in the character development. Stan and Kyle already have distinct personalities in the original. In the fanfic, these can be further explored in a romantic context. Maybe Stan's more cynical side and Kyle's idealism play off each other in new ways when it comes to love. Also, the lemon aspect might add a bit of spice to their relationship, like showing a more passionate side of their connection that we don't see in the regular show.
Friendship is a very common theme. Since Kyle and Stan are friends in the original show, many fanfics explore how their friendship can grow and change. They might face challenges together and come out stronger.
They could also be brought together by external factors. Say there's a new kid in town who starts causing trouble for both of them. They have to team up to deal with this common enemy. During this time, they learn to communicate better. Kyle teaches female Cartman some of his problem - solving skills and she, in turn, shows him how to be more assertive in a different way. Through these shared experiences, their relationship can develop in a believable way.
Create a believable plot. It could be set in South Park or an alternate version of it. Maybe there's a mystery in town and Stan and Kyle are working together to solve it, and during that, their relationship blossoms. For the lemon aspect, build up the tension slowly. Show their growing feelings for each other gradually until it reaches that more intimate part. Also, use good dialogue to show their personalities.
One common theme is friendship. Since they are friends in the show, many fanfics explore their friendship deeper, like how they support each other through tough times. Another theme is adventure. Writers might create stories where Stan and Kyle go on some exciting adventures together, maybe in a different world or during a mystery in South Park.
A theme that is often explored is the idea of breaking norms. Since it's a deviation from the traditional Kyle and Stan relationship, the fanfics might play with the idea of going against what is expected in the South Park world. This can include things like different social roles or how they are perceived by other characters in the town.
One common theme might be the exploration of their relationship in a new and different context. With the mpreg element, it could be about how they deal with the unexpected situation together.
Well, there are some South Park fan communities on social media platforms. For example, on Reddit, there are subreddits dedicated to South Park fanfiction. You might find some great Stan x Kyle fanfics there. People often share their favorite stories or even write their own and post them. It's a good place to interact with other fans too.