Rule 34 Dev - 1girl alternate_costume animal_ears blush breasts casual collarbone comiket_101 commentary_request door doorway highres horse_ears horse_girl horse_tail medium_breasts medium_hair nice_nature_(umamusume) opening_door pants photo_(object) pov pov_doorway red_eyes smile solo soramuko split_image tail tail_wagging umamusume window|17992112814