>>715187078According to accounts in our folklore it weaves in and out of seeming like normal sex, you losing sense of anything, an phantasmal sense of pleasure with no clear source as if your mind is being directly stimulated and a sense of intrusion/unease sort of like people who experience unexplained sensations and dread during a drug trip.
But as the other anon said in the Darkstalker world they mostly just stick to physical stimuli and harvest the byproduct, I'm not sure if any spiritual manipulation is involved.