In a fanfic, Moxxie's accent could be a central part of a romantic storyline. Suppose there's a character who is initially put off by her accent but then gradually falls in love with her as they get to know her better. Her accent becomes something endearing and special, and they have cute exchanges where he tries to imitate her accent playfully.
I'm not sure who Stella Jang is specifically in this 'Love Story'. She could be an ordinary person sharing her own love experiences, or perhaps she's a semi - public figure within a certain community.
The main characters are Striker and Moxxie. Striker might be seen as the more dominant and aggressive one. He has his own goals and ways of doing things in Hell. Moxxie, who is associated with I.M.P., has his own set of friends and a life that gets intertwined with Striker's in the fanfic, creating a lot of interesting interactions and storylines.
There are countless possibilities for Stella's story. It could be inspired by her dreams, where she envisions a world different from our own. For example, a world where animals can talk and they have their own society with rules and hierarchies. Or it could be a historical story, where Stella delves into the past and writes about an important event or a forgotten hero.
It can be depicted through her dialogue. For example, using specific words or phrases that are characteristic of her accent. Like she might say 'ain't' instead of 'isn't' or use some unique local slang.
You can start by looking on popular fanfic websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and you're likely to find quite a few 'Moxxie x Striker' ones there.
One popular 'Moxxie x Striker' fanfic is 'The Unlikely Bond'. It delves into a scenario where they are forced to work together on a mission and gradually develop an understanding of each other.
One possible interesting plot could be Striker and Moxxie being forced to work together on a dangerous mission. They start off hating each other but gradually come to respect one another's skills as they face various challenges.