2girls animal_ears asymmetrical_dress asymmetrical_footwear bare_shoulders black_dress black_hair blue_hair boots braid closed_mouth crown_braid detached_sleeves dress expressionless frilled_skirt frills full_body gloves gocoli highres horse_ears horse_girl horse_tail long_hair looking_at_viewer mejiro_ardan_(umamusume) mejiro_dober_(umamusume) multiple_girls open_mouth purple_eyes single_glove single_sleeve skirt smile socks standing striped striped_socks tail umamusume white_background white_gloves white_socks