1girl, alternate_costume, animal_ears, bed, blush, breasts, brown_eyes, casual, cleavage, closed_mouth, collarbone, hair_between_eyes, hair_ornament, horse_ears, horse_girl, horse_tail, kurumiyasan_ns, legs, lens_flare, looking_at_viewer, medium_breasts, medium_hair, nice_nature_(umamusume), pillow, red_hair, shirt, shorts, sitting, solo, tail, umamusume