1girl, ahoge, alternate_costume, animal_ears, black_hair, breasts, buruma, daring_tact_(umamusume), gameplay_mechanics, gym_uniform, hair_ornament, horse_ears, horse_girl, kouzuki_hajime, looking_at_viewer, medium_breasts, medium_hair, navel, open_mouth, original_race_uniform_(umamusume), race_bib, simple_background, smile, solo, thighhighs, umamusume, white_background