1girl, alternate_breast_size, animal_ears, belt, black_coat, blue_eyes, blush, breasts, brown_hair, brown_pantyhose, coat, day, feet_out_of_frame, field, flower, flower_field, grass_wonder_(umamusume), hand_in_own_hair, hand_on_own_thigh, herohero_(higashi_no_dou), horizon, horse_ears, horse_girl, horse_tail, long_hair, looking_at_viewer, medium_breasts, open_clothes, open_coat, open_mouth, outdoors, pantyhose, rainbow, shirt, shirt_tucked_in, skirt, smile, solo, standing, tail, tree, umamusume, white_shirt