rio (blue archive), 1girl, breasts, solo, halo, ass, black hair, red eyes, torn clothes, long hair, ponytail, blush, huge breasts, bodysuit, white background, from behind, simple background, sweat, hair ornament, looking at viewer, looking back, sideboob, alternate hairstyle, undressing, back, black bodysuit, alternate costume, bare shoulders, torn bodysuit, topless, large ass, buttocks, butt crack, one buttock out