1girl, animal_ears, arknights, bare_shoulders, blue_sky, cat_ears, closed_mouth, day, detached_wings, dress, green_eyes, grey_hair, long_hair, looking_at_viewer, low_ponytail, mechanical_wings, official_alternate_costume, outdoors, rosmontis_(arknights), rosmontis_(become_anew)_(arknights), sky, sleeveless, sleeveless_dress, solo, upper_body, very_long_hair, white_dress, wings