1girl, animal_ears, blue_eyes, blue_shorts, bottle, chi_(luckyeric320), drinking, from_side, green_hair, holding, holding_bottle, horse_ears, horse_girl, horse_tail, off_shoulder, profile, seiun_sky_(umamusume), shadow, shirt, short_hair, short_sleeves, shorts, sleep_bubble, solo, standing, tail, umamusume, water_bottle, white_shirt