Location: outdoor natural hot spring at night with steam rising from the turquoise mineral water into the cool air, illuminated by soft moonlight and the warm glow of stone lanterns placed around the rocky edge
Position: Yui leans forward toward the viewer with her breasts pressed against the viewer's mouth while her face shows an intense pleasure expression with half-lidded unfocused eyes and a slack open mouth; a medium shot
Clothing: Yui is fully naked
