One common theme is friendship evolving into something more. Since they often interact in the game, in fanfiction, their bond can develop romantically. Another theme could be adventure. They might go on quests together, facing challenges side by side which deepens their relationship.
I'm not sure specifically as I haven't read this particular fanfiction. But generally, it might be about some sort of adventures or relationship between Felicia and Corrin during wet nights. It could involve them facing challenges together, or perhaps some emotional moments shared during those times.
One great Corrin x Felicia fanfiction is 'A Royal Bond' which beautifully explores their relationship through various adventures. It shows how Corrin and Felicia support each other during tough times in the story.
Some fanfiction communities on Reddit might also have relevant 'female corrin x felicia fanfiction'. Check out subreddits related to Fire Emblem fanfiction. However, the quality can vary, so it's important to read the descriptions and reviews if available to find something that suits your taste.
You could try searching on popular fanfiction websites such as Archive of Our Own (AO3) or FanFiction.net. They usually have a wide range of fanfictions including ones related to Felicia and Corrin.
One popular type might be adventure - themed ones, where the two Corrins go on a quest together. Maybe they are exploring a mysterious new land full of magical creatures and ancient ruins.
You could also try searching on social media platforms like Tumblr. There are many fanfiction writers who post snippets or links to their full works on their blogs. Look for tags related to Corrin and fanfiction. But be aware that the organization might not be as systematic as on dedicated fanfiction websites.
In these fanfics, the chemistry between Peter and Felicia is a big draw. The writers play with their attraction, which can be physical, emotional or both. There's also often a sense of danger and mystery as they navigate their relationship, given their different backgrounds and the nature of the world they live in. There could be elements of secret identities, heists (since Felicia is often involved in that kind of activity in the source material), and of course, love and passion.
One great Spiderman x Felicia fanfic is 'Midnight Encounters'. It beautifully captures their relationship with well - written dialogues and action scenes. The author does an amazing job of portraying Felicia's charm and Spiderman's internal conflict regarding his feelings for her.