2girls, ahoge, animal_ears, ass, blue_eyes, blue_one-piece_swimsuit, blue_sky, blush, breasts, brown_hair, cloud, competition_school_swimsuit, hair_between_eyes, hair_over_one_eye, hairband, horse_ears, horse_girl, horse_tail, long_hair, looking_at_viewer, looking_back, medium_breasts, mihono_bourbon_(umamusume), multiple_girls, one-piece_swimsuit, ooeyama, open_mouth, outdoors, rice_shower_(umamusume), school_swimsuit, sky, sunlight, sweat, swimsuit, tail, tracen_swimsuit, umamusume