1girl animal_ears blush bow bowtie brown_eyes brown_hair closed_mouth cowboy_shot heartbeat highres horse_ears horse_girl horse_tail horseshoe_ornament long_hair miniskirt multicolored_hair nanahamu nice_nature_(umamusume) pleated_skirt puffy_short_sleeves puffy_sleeves purple_shirt red_hair sailor_collar sailor_shirt school_uniform shirt short_sleeves simple_background skirt solo streaked_hair summer_uniform tail thought_bubble tracen_school_uniform translated two_side_up umamusume white_background white_skirt