What I love most about this animation is how, while the hypermasculine demon has his hands at our unnamed Dark Altar protagonist's (at least I don't recall her* being assigned a name by the Admin) hips. it appears to me that she's at least matching the aggressiveness of her paramour's thrusting with her own counter-thrusting! Of course, that's to a great degree to do with the effect that the black magic-charmed chains she's forced to wear have over her mind and body, but I think that she's begun to enjoy the experience in spite of it being non-consensual at the outset -- as evinced by how tightly her pussy lips grip his long, girthy cock!