rio (lio yuzu), mejiro ardan (umamusume), umamusume, highres, 1girl, animal ears, blue hair, blue neckerchief, blue sailor collar, blue skirt, blush, braid, breasts, collarbone, cropped shirt, crown braid, ear ornament, grin, heart, horse ears, horse girl, horse tail, large breasts, long hair, looking at viewer, midriff, navel, neckerchief, open mouth, pleated skirt, purple eyes, sailor collar, school uniform, shirt, short sleeves, simple background, skirt, smile, solo, tail, white background, white shirt