1girl, alternate_costume, animal_ears, arms_up, ass, bikini, blurry, blurry_background, breasts, brown_hair, cloud, day, donten_(841427259), fine_motion_(umamusume), folded_ponytail, from_behind, green_eyes, horse_ears, horse_girl, horse_tail, looking_at_viewer, looking_back, medium_breasts, ocean, side-tie_bikini_bottom, sky, solo, swimsuit, tail, umamusume, water