1girl, 89ru0, animal ears, armpit crease, arms behind back, bikini, bikini top only, black bikini, black hair, blue sky, blush, bob cut, breasts, cleavage, cloud, collarbone, day, detached sleeves, eishin flash (umamusume), front-tie bikini top, front-tie top, hair between eyes, horse ears, horse girl, large breasts, leaning forward, light smile, looking at viewer, medium hair, outdoors, puffy short sleeves, puffy sleeves, purple eyes, red skirt, short sleeves, sidelighting, sideways glance, skirt, sky, smile, solo, striped, striped skirt, swimsuit, umamusume, vertical-striped skirt, vertical stripes