1girl, all_fours, bare_arms, bare_shoulders, black_hair, blue_one-piece_swimsuit, breasts, closed_mouth, competition_swimsuit, from_behind, huge_breasts, large_breasts, long_hair, looking_at_viewer, looking_to_the_side, one-piece_swimsuit, original, ringobatake, smile, solo, swimsuit, thighs, twintails, wet, yellow_eyes