1girl, animal_ears, arm_at_side, baseball_cap, black_headwear, black_shirt, boc'z_(umamusume), breasts, brown_hair, closed_mouth, covered_navel, ears_through_headwear, finger_to_mouth, hair_over_one_eye, hand_up, hat, horse_ears, horse_girl, horse_tail, impossible_clothes, impossible_shirt, long_hair, looking_at_viewer, purple_eyes, rice_shower_(boc'z)_(umamusume), rice_shower_(umamusume), roppaku, shirt, shushing, simple_background, single_sleeve, small_breasts, solo, tail, twitter_username, umamusume, upper_body, white_background