1girl, animal_ears, bikini, black_bikini, blue_sky, blush, breasts, brown_hair, daiwa_scarlet_(umamusume), dutch_angle, fang, hair_intakes, halterneck, horse_ears, horse_girl, horse_tail, large_breasts, long_hair, looking_at_viewer, lying, navel, on_side, open_mouth, ray_mil68, red_eyes, shallow_water, sky, solo, string_bikini, swimsuit, tail, thighs, umamusume, very_long_hair, water, wet