1girl, air_groove_(umamusume), animal_ears, arm_up, bad_pixiv_id, blue_eyes, blue_jacket, bow, breasts, brown_hair, cleavage, collarbone, crop_top, ear_bow, hair_between_eyes, horse_ears, horse_girl, jacket, large_breasts, long_sleeves, looking_at_viewer, lying, matuda_(matudayazo), midriff, navel, on_back, open_clothes, open_jacket, parted_lips, shirt, short_hair, short_shorts, shorts, sidelocks, smile, solo, twitter_username, umamusume, yellow_bow, yellow_shirt