1girl, adjusting_sock, animal_ears, brown_hair, brown_vest, closed_mouth, earrings, horse_ears, horse_girl, horse_tail, jewelry, kusanagi_kaoru, long_sleeves, loose_socks, multicolored_hair, purple_eyes, school_uniform, simple_background, single_earring, skirt, sleeves_rolled_up, socks, solo, streaked_hair, symboli_rudolf_(umamusume), tail, umamusume, vest, white_background