Keine Kamishirasawa and Fujiwara no Mokou from Touhou HD Wallpaper

Two anime-style characters are depicted in a black and white illustration, separated by a dark vertical divider. On the left, a character with long black hair and a white outfit stands with an outstretched hand. On the right, a monstrous character with long white hair, sharp teeth, and claw-like hands is shown with an open mouth.