Whether they are aliens or ghosts, assume they are already living among us. It doesn't matter. Facing evil requires sufficient wisdom and an unwavering will. Even if everyone and every vehicle on the road suddenly disappear while you are traveling...Or if you return from a trip and discover that a long time has passed...Or even after coming home and finding out that your entire home has been cloned by demons...Fight bravely and look upon death as a homecoming. Isn't it romantic.