1girl, arm_support, bare_arms, bare_shoulders, black_one-piece_swimsuit, blush, breasts, brown_hair, closed_mouth, collarbone, competition_swimsuit, covered_navel, from_above, huyumitsu, indoors, large_breasts, long_hair, looking_at_viewer, lying, on_back, one-piece_swimsuit, original, sitting, solo, spread_legs, swimsuit, thighs, yellow_eyes