Rule 34 Dev - 1girl :d antennae arknights arms_behind_head black_jacket black_scarf breasts demon_girl demon_horns demon_tail grey_hair highres horns jacket medium_breasts open_clothes open_jacket open_mouth orange_eyes scarf shirt short_hair simple_background smile solo tail tetuw upper_body w_(arknights) white_background white_shirt|20420544690