1girl, animal_ears, aoi_(kirabosi105), beach, beach_umbrella, bikini, breasts, brown_hair, cleavage, collarbone, daiwa_scarlet_(trifle_vacation)_(umamusume), daiwa_scarlet_(umamusume), fang, frilled_bikini, frills, hair_intakes, horse_ears, horse_girl, horse_tail, large_breasts, long_hair, looking_at_viewer, navel, official_alternate_costume, open_mouth, outdoors, red_bikini, red_eyes, self_cosplay, simple_background, solo, swimsuit, tail, twintails, umamusume, umbrella, very_long_hair, white_background