1girl, animal_ears, barefoot, bikini, bikini_skirt, blush, breasts, brown_hair, cleavage, collarbone, daiwa_scarlet_(trifle_vacation)_(umamusume), daiwa_scarlet_(umamusume), fang, frilled_bikini, frills, hair_bobbles, hair_intakes, hair_ornament, hair_spread_out, hand_in_own_hair, hands_in_hair, horse_ears, horse_girl, horse_tail, long_hair, medium_breasts, navel, official_alternate_costume, open_mouth, pool, red_bikini, red_eyes, sitting, skin_fang, sodemaru_unagi, solo, swimsuit, tail, umamusume, very_long_hair, wariza, water, wet