woman, slender athletic build, toned but feminine, long straight brunette hair, 170cm tall, (perky small-to-medium breasts), healthy body proportions, sitting nude on a wooden chair in a dimly lit luxury apartment bedroom, wrists loosely tied behind the chair with soft black silk ribbon, ankles relaxed and parted slightly, long white curtain in the background filtering warm golden light, red rope marks gently indented into her thighs, wearing a black collar with a delicate silver ring, her lips parted in