1girl, d, animal_ears, bikini, blonde_hair, blue_sky, blush, breasts, cloud, collarbone, day, ear_covers, horse_ears, horse_girl, horse_tail, looking_at_viewer, medium_hair, narita_top_road_(umamusume), navel, open_mouth, outdoors, purple_bikini, purple_eyes, reaching, reaching_towards_viewer, single_ear_cover, sky, smile, solo, stomach, sun, swimsuit, tail, tsukiyuki_mike, umamusume