1girl, blush, closed_mouth, collarbone, completely_nude, green_eyes, grey_hair, hair_between_eyes, half-closed_eyes, looking_at_viewer, nude, onsen, partially_submerged, shirosato, simple_background, solo, towel, towel_on_head, upper_body, water, white_background, yama_no_susume, yukimura_aoi