Elaborate fantasy and sci-fi worldbuilding as necessary context and structure for porn is great, but what's really fantastic is when the worldbuilding is a product of the porn. It clearly didn't need to be there, but at some point the author took a closer look at the porn and started asking "okay, so what does this imply?"
Level 1: The worldbuilding needs to be there for the porn to make sense.
Level 2: The porn needs to be there for the worldbuilding to make sense.










