1girl, ahoge, alternate_costume, animal_ears, beach, bikini, blue_eyes, blush, breasts, cleavage, daring_tact_(umamusume), hair_ornament, halterneck, horse_ears, horse_girl, horse_tail, kouzuki_hajime, looking_at_viewer, medium_breasts, medium_hair, navel, ocean, side-tie_bikini_bottom, solo, string_bikini, swimsuit, tail, umamusume