1girl absurdres animal_ears bangs black_pantyhose black_skirt blue_eyes blue_sailor_collar feet_out_of_frame highres horse_ears invisible_chair long_sleeves looking_at_viewer muzinneki neckerchief oguri_cap_(umamusume) pantyhose pleated_skirt red_background red_neckerchief sailor_collar shadow shirt simple_background sitting skirt solo umamusume white_shirt