1girl, armpits, arms_up, beach, bikini, blush, breasts, brown_hair, cleavage, day, floral_print, front-tie_bikini_top, front-tie_top, horse_girl, innertube, medium_breasts, medium_hair, miki_lutecia, navel, nice_nature_(umamusume), ocean, open_mouth, outdoors, red_hair, sand, side-tie_bikini_bottom, signature, solo, swimsuit, umamusume