1girl, ahoge, alternate_costume, animal_ears, black_hair, breasts, cleavage, collarbone, glass, hair_ornament, horse_ears, horse_girl, horse_tail, kitasan_black_(umamusume), looking_at_viewer, medium_breasts, navel, ocean, one_eye_closed, oshage_(osyage921), outdoors, red_eyes, sky, solo, swimsuit, tail, umamusume