1girl, alternate_costume, animal_ears, beach, bikini, breasts, brown_hair, day, hair_ornament, hairclip, hat, horse_ears, horse_girl, horse_tail, looking_at_viewer, lying, matikane_tannhauser_(umamusume), medium_breasts, medium_hair, osom9525, outdoors, ribbon, sky, smile, solo, swimsuit, tail, umamusume, water, wet, yellow_eyes