Rule 34 Dev - 1girl animal_ears arms_up aston_machan_(umamusume) blush breasts brown_hair collarbone commentary_request full_body green_eyes hair_ornament highres horse_ears horse_girl horse_tail kamikumo_(km_kamikumo) large_breasts letter looking_at_viewer open_mouth school_uniform simple_background standing tail thighhighs umamusume|23558318082