1girl, ahoge, all_fours, ass, black_hair, blue_swimsuit, breasts, brown_eyes, competition_school_swimsuit, competition_swimsuit, embarrassed, feet_out_of_frame, from_behind, gradient, gradient_background, grey_background, highleg, highleg_swimsuit, large_breasts, long_hair, looking_at_viewer, looking_back, one-piece_swimsuit, open_mouth, solo, swimsuit, teeth, upper_teeth