safebooruhttps://safebooru.org/index.php?page=atom&tags=1girl animal ears arms behind head bird blue background blue eyes center frills choker closed mouth dove feet out of frame frills green shorts grey hair hair ornament highres horse ears horse girl horse tail seiun sky (umamusume) shirt short sleeves shorts simple background smile solo tail twitter username umamusume white shirt yi yu2024-06-23T07:39:09Zsafebooru