1girl, alternate_costume, animal_ears, beach, bikini, black_bikini, breasts, brown_hair, cleavage, collarbone, cowboy_shot, ear_covers, embarrassed, hair_between_eyes, hair_ornament, horse_ears, horse_girl, horse_tail, houton_tamago, looking_at_viewer, medium_breasts, medium_hair, navel, nice_nature_(umamusume), outdoors, red_hair, sand, solo, swimsuit, tail, twitter_username, umamusume