I'm not sure specifically about 'double d x kevin fanfiction'. You could try searching on fanfiction websites like Archive of Our Own or FanFiction.net. They have a vast collection of fanfictions, and you might find something related there.
One common theme could be friendship. They might explore how Kevin and Double D's relationship evolves from just acquaintances to really good friends. Another theme could be adventure, where they go on some exciting journey together.
Fanfiction.net is also a place to look. It has been around for a long time and has a large collection of different fanfictions. However, the search might require a bit more effort as there's a lot of content, but it's definitely worth a try for 'kevin x double d fanfiction'.
Some 'kevin x double d fanfiction' might focus on a school project that brings them together. Double D is so studious and Kevin is more of a troublemaker at first. But as they work on the project, Kevin starts to see Double D's intelligence in a new light and they form a unique connection that changes their relationship dynamic.
I'm not sure exactly which 'kevin x double d' fanfiction is good. You could try searching on popular fanfiction websites like Archive of Our Own. They usually have a wide variety of fan - created stories, and you can use the search function to look for stories specifically about these two characters.
Another theme might be adventure. The fanfic could put them on an adventure together, facing challenges and solving problems side by side. This can add an exciting element to the story and also show how their relationship develops during the adventure.
One way to find 'Kevin x Double D fanfic' is to join relevant fan communities. For example, on Reddit, there might be sub -reddits dedicated to the fandom of the work these characters are from. People in these communities often share and discuss their favorite fanfics, and you can ask specifically for 'Kevin x Double D' ones. They may also provide insights on which ones are well - written and worth reading.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of various fanfictions, including 'ben x kevin yaoi' ones. Fanfiction.net is also a good place to look. Just search for the relevant tags and you should be able to find some.
One popular 'ben x kevin yaoi fanfiction' might be 'Parallel Hearts'. It explores their relationship in a unique way, with great character development. Another could be 'Hidden Desires' which delves deep into their unspoken feelings for each other. And 'Midnight Encounters' often gets recommended for its interesting plot twists regarding their relationship.