1girl, 1man, focus, pov, 1boy, pov hands, 1girl, japanese woman, 21 years old, large breasts, wide hips, toned female, narrow waist, soft rounded egg-shaped face, small chin, shoulder-length long dark brown hair flowing to left, warm brown eyes, clear double eyelids, long eyelashes, clear milky skin, light blush, completely nude, breasts and pussy fully exposed, nipples and vulva visible, lying on back, legs spread, hands moving inside pussy, fingering, fingers in pussy, finger penetration, pussy wet, face flushed, avoiding gaze, biting lips, blushing, shy, at a swimming pool locker room, pov hand holding fingers inside her, 1:1 square, masterpiece, best quality, 8k, hyper-realistic, photography, film grain, natural shadows, soft light leaks, natural light bokeh, topless, bare chest, breasts fully exposed, nipples visible, bottomless, bare lower body, pussy fully exposed, vulva visible, solo focus, medium shot waist-up