1girl, animal_ears, barefoot, brown_hair, chibi, full_body, gym_uniform, horse_ears, horse_girl, horse_tail, long_hair, lying, mopiwo, on_stomach, red_shorts, rice_shower_(umamusume), shirt, short_sleeves, shorts, simple_background, solo, tail, tracen_training_uniform, umamusume, white_background, white_shirt