riiko25chan, copano rickey (umamusume), umamusume, highres, 1girl, ahoge, animal ears, black skirt, blue nails, blush, bow, breasts, brown hair, cardigan, collared shirt, double bun, ear covers, fang, hair between eyes, hair bun, hair ornament, horse ears, horse girl, horse tail, long hair, looking at viewer, mismatched ear covers, multicolored hair, one eye closed, open mouth, pink cardigan, pleated skirt, purple eyes, red bow, shirt, simple background, skirt, smile, solo, tail, tassel, tassel hair ornament, white background, white hair, white shirt