1girl, animal_ears, black_one-piece_swimsuit, blue_hair, braid, breasts, collarbone, competition_swimsuit, covered_navel, crown_braid, ear_ornament, groin, hands_up, heart, horse_ears, horse_girl, horse_tail, long_hair, looking_at_viewer, medium_breasts, mejiro_ardan_(umamusume), one-piece_swimsuit, purple_eyes, simple_background, smile, solo, swimsuit, tail, tomo_(tmtm_mf_mf), towel, umamusume, very_long_hair, water_drop, white_background