1girl agnes_tachyon_(umamusume) ahoge animal_ears black_necktie black_pantyhose brown_eyes brown_hair cardigan closed_mouth coat cowboy_shot horse_ears horse_girl horse_tail labcoat necktie pantyhose shirabi short_hair simple_background sleeves_past_fingers sleeves_past_wrists smile solo tail umamusume unfinished white_background white_coat yellow_cardigan