Hey, great idea for a thread. I'll take the bait and pitch my own story, The Red Blight.
In a few words, the world is ending, eaten by a plague that corrupts reality itself. Our survivors live on a giant, ever-moving train and cross countries to free dreamers. The plague traps people in nightmares, and the only way to save them is a psychic jolt. Turns out, the strongest jolt comes from an orgasm xD
So yeah, there's a lot of sex involved. The whole story is not only about that, but our characters' tight-knit, polyamorous, found family.
This isn't typical erotica or just smut. The story is about the characters, their trauma, and their desperate attempt to trust each other in a world designed to break them. The relationships are the core of it, and I wanted them to be messy and real, as the characters progress and... well, discover things. There’s a deep plot with conspiracies and monsters, but I can't say anything else to avoid spoilers.
If you want to read something mature, you might like it. If so, the link is in my signature :)