1girl animal_ears arms_behind_head blue_eyes brown_hair ear_covers from_side grass_wonder_(honor_of_the_blue_flame)_(umamusume) grass_wonder_(umamusume) grey_background highres horse_ears horse_girl japanese_clothes long_hair looking_ahead muneate official_alternate_costume reversi_(reversi_ppp) simple_background solo tying_hair umamusume upper_body