2girls, d, animal_ears, artist_name, barefoot, beach, bikini, bikini_skirt, breasts, brown_hair, cleavage, cloud, daiwa_scarlet_(trifle_vacation)_(umamusume), daiwa_scarlet_(umamusume), day, fang, hair_bobbles, hair_intakes, hair_ornament, horse_ears, horse_girl, horse_tail, korokoro_nekoz, large_breasts, lens_flare, long_hair, looking_at_viewer, low_twintails, multiple_girls, navel, ocean, official_alternate_costume, outdoors, partially_submerged, red_bikini, red_eyes, signature, sitting, skin_fang, sky, smile, surfboard, surfing, swimsuit, tail, tiara, twintails, umamusume, vodka_(umamusume), wading, wariza, water