1girl, animal_ears, arms_up, bad_pixiv_id, bikini, breasts, breasts_apart, cowboy_shot, daiwa_scarlet_(umamusume), greyscale, hair_between_eyes, hair_intakes, horse_ears, horse_girl, large_breasts, long_hair, long_sleeves, looking_at_viewer, lying, monochrome, navel, on_back, parted_lips, simple_background, solo, string_bikini, swimsuit, tiara, umamusume, very_long_hair, white_background, xiaoluo_xl