It is hard to explain to someone who is not into D/s what can be so arousing to see what I see in this picture. A woman naked on her knees, her hands resting on her thighs, aroused as well by sitting there against a fully clothed standing man looking down on her. If you don’t feel it, well that’s it you know. The only way I can explain it is showing you this picture and say, this is what it feels like.
From my POV.