Alright, so demon stuff in spicy books is basically just an exaggerated metaphor for that push-pull of control, right? The whole 'incubus/succubus' or 'demon lord' trope puts a supernatural, often predatory, spin on it. The power imbalance is baked into the premise—one partner is literally an immortal being with magic or strength, the other’s a human. But what I find more interesting is how the physical position itself, when it's described as something like 'from behind with claws gripping hips' or 'pinned against a wall with a tail coiled around an ankle,' visualizes that dynamic in a way regular power play sometimes can't. It’s not just a guy being bossy; it’s a creature exerting a kind of otherworldly, unavoidable dominance.
That said, I've read a few where the human character ends up 'taming' the demon through the act, which flips the script in a really satisfying way. The power play becomes a negotiation, not a one-way street. The demon's 'monstrous' nature highlights the surrender of control from both sides—the human surrenders to the supernatural, but the demon surrenders to the raw, human passion that destabilizes its cold, ancient power. In a book like 'A Soul to Keep,' that flip is everything. The position itself becomes less about physical domination and more about which kind of power—primal desire or immortal will—wins out in the end.