1girl, animal_ears, bare_shoulders, bikini, bikini_skirt, blurry, blurry_background, blush, breasts, brown_hair, cleavage, closed_mouth, collarbone, cowboy_shot, daiwa_scarlet_(trifle_vacation)_(umamusume), daiwa_scarlet_(umamusume), day, eve_on_k, frilled_bikini, frills, groin, hair_intakes, halterneck, horse_ears, horse_girl, large_breasts, long_hair, looking_at_viewer, navel, official_alternate_costume, outdoors, railing, red_bikini, red_eyes, solo, standing, sweatdrop, swimsuit, twintails, umamusume, very_long_hair