1girl, alternate_costume, animal_ears, black_hair, blush, breasts, buruma, hair_ornament, hairclip, hands_on_own_chest, horse_ears, horse_tail, looking_at_viewer, medium_breasts, mejiro_dober_(umamusume), nakahira_guy, open_mouth, original_race_uniform_(umamusume), purple_eyes, simple_background, solo, sweat, tail, umamusume