1girl, animal_ears, armpits, arms_up, blush, breasts, hair_between_eyes, hair_ornament, horse_ears, horse_girl, innertube, kitasan_black_(umamusume), looking_at_viewer, maximum7010, medium_breasts, medium_hair, navel, ocean, red_eyes, school_swimsuit, solo, sparkle, swimsuit, tracen_swimsuit, umamusume