count zero, hoshino ruri, kidou senkan nadesico, ass grab, bad tag, biting finger, finger in mouth, long image, tall image, 1girl, all fours, ass, back, bare back, bare shoulders, bent over, biting, blush, closed eyes, curtains, fingering, fingernails, floor, indoors, kneeling, legs, loli, long hair, nude, on floor, open mouth, purple hair, saliva, skinny, solo focus, tears, thighs, top-down bottom-up, twintails, window, wooden floor