Arknights 4K: Crownslayer, Talulah, Frostnova, W, Mephisto HD Wallpaper

Five anime-style characters are gathered on a rooftop with a city skyline in the background. Two characters in the foreground are sitting, one with white hair and red accents, and another with dark hair and a ruffled collar. Three other characters are visible in the background, one sitting in a chair, another standing with a rifle, and a third with a hood.