Pixiv Fantasia FK: Have a Good Dream, My Comrades HD Wallpaper

Two anime characters, one with black hair and red eyes and the other with white hair, stand in a desolate, ruined urban environment. The character with black hair wears a white dress and black hooded cloak, while the character with white hair wears a black coat and red arm guard. A large banner with a crest is visible in the background.