1girl, ahoge, animal_ears, blush, breasts, greyscale, hair_ornament, hands_up, horse_ears, horse_girl, kitasan_black_(umamusume), large_breasts, long_sleeves, looking_at_viewer, looking_to_the_side, medium_hair, monochrome, multicolored_hair, open_mouth, ribbed_sweater, simple_background, smile, solo, streaked_hair, sweater, tekitou_nimo_hodo_ga_aru, turtleneck, turtleneck_sweater, umamusume, upper_body, white_background