BDSM
BDSM is the umbrella: bondage and discipline, dominance and submission, sadism and masochism. As a theme on the main site it tells the plan that the story's sex is structured by an exchange of power and by practices with names, and that the reader wants those practices written correctly. It is the broadest theme in the catalogue, and the one where readers judge hardest, because the people who tick it usually know the territory.
What separates a BDSM story from a story with rough sex in it is the frame. Rough is a quality of a scene. BDSM is an arrangement between people, with things agreed before and a comedown after, and the scene sits inside that arrangement. Fiction that skips the arrangement and keeps only the scene is the kind that makes practitioners close the book.
How the engine handles it. Ticking BDSM switches the story toward the genre's craft rules: what has been agreed is established before it is tested, consent is active and revocable, equipment and restraint are described with the same precision as anatomy, the body under pressure is tracked honestly, and aftercare is written into the scene rather than pushed into an epilogue. The story state carries the arrangement's terms across sections. Readers who want the full vocabulary, rope, impact, protocol, denial, sensation, will find each as its own theme on DesireBorn Bound, where the BDSM landing page and the guide to setting your own limits go further. One limit is not a matter of theme: every character in a sexual context is an adult.
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