eishin flash (umamusume), umamusume, artist request, 1girl, animal ears, beach, beach chair, bikini, black hair, blue bikini, blue eyes, blue nails, braid, breasts, cleavage, ear ornament, frilled bikini, frills, gigantic breasts, hair between eyes, hair ornament, halterneck, horse ears, horse girl, jewelry, lips, medium hair, navel, necklace, ocean, outdoors, side braid, sitting, sky, smile, solo, swimsuit, thick thighs, thigh strap, thighs, yakitori (firebirdumai)