1girl, aqua_eyes, aqua_hair, arms_behind_back, ass_visible_through_thighs, bikini, breasts, cowboy_shot, groin, hair_ornament, halkawa501, halterneck, hatsune_miku, indoors, innertube, long_hair, navel, pool, rei_no_pool, side-tie_bikini_bottom, small_breasts, smile, solo, standing, stomach, string_bikini, striped, striped_bikini, swimsuit, twintails, very_long_hair, vocaloid