In Gwen Stacy and Miles Morales fanfic, the characterizations are really interesting. The writers can take the base personalities of these two characters from the comics or movies and expand on them. They might give Gwen more of a rebellious streak when she's with Miles or show Miles as being more vulnerable around Gwen.
Love and self - discovery are also prevalent themes. Their relationship often serves as a catalyst for them to learn more about themselves, and the love that develops between them is a central aspect of many Miles x Gwen fanfics.
There is a fanfic titled 'Gwen and Miles: A New Beginning'. In this, it shows how they first meet in a different scenario than in the original story and how their relationship develops from there. There are also fanfics that focus on their emotional connection, like 'Gwen and Miles: Hearts Entwined', which is really touching as it shows their deep understanding of each other.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, including many 'Gwen and Miles fanfic'.
One possible storyline could be Gwen and Miles teaming up to take on a new supervillain in their city. They could start off not seeing eye - to - eye on how to approach the villain, but as they face different challenges during the fight, they learn to trust each other's instincts more. Another could be a story where they accidentally swap powers for a day and have to deal with the chaos that ensues while also trying to keep it a secret from their friends and family.
Another one is 'Miles and Gwen: Unlikely Allies'. This fanfic takes place during a big city - wide crisis. They are forced to work together despite their differences at the start. The author does a great job of showing their dynamic and how they come to rely on each other.
FanFiction.net is also a great place. There are many users who post their 'gwen x miles' stories there. Just use the search bar and type in 'gwen x miles fanfic' and you'll get a list of relevant stories.
A theme that stands out is the exploration of different dimensions. Given the multiverse aspect in their stories, fanfics often take them to different dimensions where they face new challenges and meet different versions of themselves or other characters. This adds an element of mystery and excitement to the stories.
One great 'Miles and Gwen Fanfiction' is 'Parallel Paths'. It explores their relationship in a different dimension where they have to team up against a new villain. The story is full of action and their banter is really well - written.
Another one is 'The Journey of Miles and Gwen'. It takes readers on an adventure with them, through different situations that test their relationship. It's well - written with great character development for both Miles and Gwen.