1girl, alternate_costume, animal_ears, beach, bench, bikini, black_bikini, blue_hair, breasts, chestnut_mouth, color_pro, ear_ornament, frilled_bikini, frills, from_above, halterneck, horse_ears, horse_girl, jacket, jacket_on_shoulders, jewelry, long_hair, looking_at_viewer, mejiro_ardan_(umamusume), necklace, on_bench, outdoors, side-tie_bikini_bottom, sitting, solo, swimsuit, thigh_strap, umamusume, very_long_hair