kiyosuke (kiyosuke023), oguri cap (umamusume), umamusume, absurdres, commentary request, highres, revision, 1girl, animal ears, armpits, arms up, artist name, bare shoulders, barefoot, blue one-piece swimsuit, blush, breasts, closed mouth, competition school swimsuit, covered navel, ear ornament, feet, full body, grey hair, groin, hair between eyes, hair ornament, horse ears, horse girl, horse tail, long hair, looking at viewer, lying, medium breasts, multicolored hair, on back, one-piece swimsuit, ponytail, school swimsuit, solo, streaked hair, swimsuit, tail, toes, tracen swimsuit