1girl, animal_ears, bad_id, bad_twitter_id, black_shirt, blonde_hair, closed_mouth, collar, green_eyes, grey_background, hand_in_pocket, harness, highres, horse_ears, horse_girl, little_cocon_(umamusume), long_sleeves, looking_at_viewer, multicolored_hair, sailor_collar, sakura_akami, shirt, short_hair, simple_background, smile, solo, streaked_hair, umamusume, upper_body, waving