1girl absurdres animal_ears bangs black_dress blush boots bow bowtie breasts brown_footwear dress e_name highres horse_ears horse_girl horse_tail long_sleeves looking_at_viewer multicolored_hair nice_nature_(umamusume) open_mouth orange_eyes red_hair shirt short_hair simple_background small_breasts solo streaked_hair tail twintails umamusume white_background white_shirt