1girl, animal_ears, bare_arms, bare_shoulders, bare_tree, black_hair, blue_eyes, blurry, blurry_background, blush, breasts, cleavage, eishin_flash_(umamusume), hair_bun, hand_in_own_hair, horse_ears, horse_girl, horse_tail, hoshinopurin, leaning_forward, looking_at_viewer, medium_breasts, naked_towel, onsen, open_mouth, outdoors, rock, short_hair, smile, solo, standing, swept_bangs, tail, towel, tree, umamusume, water