A candid vertical 3:4 portrait of an unmistakably adult woma

A candid vertical 3:4 portrait of an unmistakably adult woman standing in a dark indoor hot spring pool, wearing a secure beige wrap towel that fully covers her chest. Her dark hair is loosely tied back and still damp, with a few strands resting on her forehead and cheeks. She tilts her head slightly, parts her lips naturally, and looks quietly into the camera. One arm rests across the front of her body in an easy, unposed gesture. Preserve tiny water droplets and natural skin texture on her face, shoulders, neck and arms. Deep brown bamboo screens fill the background, while a woven amber lamp glows behind her and scattered highlights ripple across the water. Shoot from close to eye level with soft near-camera light, a dim room, fine grain and slightly uneven illumination, as though this fleeting moment was photographed during a quiet evening bath.