1girl, armpits, arms_up, ball, beachball, bikini, blue_sky, blush, breasts, brown_hair, day, grin, hair_ornament, hair_ribbon, holding, holding_ball, holding_beachball, large_breasts, looking_at_viewer, medium_hair, navel, oekakizuki, original, outdoors, parted_lips, partially_submerged, purple_eyes, purple_ribbon, ribbon, skindentation, sky, smile, solo, standing, striped, striped_bikini, swimsuit, teeth, thighs, twintails_girl_(oekakizuki), underboob, wading, water, wet