1girl, arknights, bad_pixiv_id, bare_shoulders, belt, black_background, black_belt, black_thighhighs, breasts, cleavage, horns, long_hair, looking_at_viewer, medium_breasts, mmnya_01, purple_eyes, red_hair, solo, standing, surtr_(arknights), thighhighs, thighs, very_long_hair