1girl, d, ahoge, animal_ears, arm_support, bare_arms, bare_shoulders, bikini, black_bikini, black_hair, blue_sky, blurry, blurry_background, blush, bottle, breasts, cleavage, cloud, collarbone, day, den_(den1115_), depth_of_field, hair_between_eyes, hand_up, holding, holding_bottle, horse_ears, horse_girl, horse_tail, kitasan_black_(umamusume), looking_at_viewer, medium_breasts, multicolored_hair, navel, outdoors, palm_tree, red_eyes, shallow_water, side-tie_bikini_bottom, sitting, sky, smile, solo, streaked_hair, swimsuit, tail, tree, two_side_up, umamusume, water, water_bottle, white_hair