1girl, animal ears, blush, breasts, cleavage, closed mouth, crop top, daiwa scarlet (umamusume), hair between eyes, horse ears, horse girl, horse tail, kuroki (ma-na-tu), large breasts, legs, long hair, looking at viewer, lying, midriff, navel, on back, pajamas, red eyes, red hair, shorts, smile, solo, striped, striped pajamas, striped shorts, tail, thighs, tiara, umamusume