Black Spot

A heinous creature is out and about. Raging with incredible hunger, it is searching for something to eat, maybe a hamburger. It acts and talks like human, and believes it is the human being. In relative reality, it's a black spot in the heart, an unwelcome guest living in a host, occasionally gaining enough control to do whatever it wants whenever the host is asleep or too weak. Tonight is such an occasion. Ageless and restless, it needs activities and seeks out danger. It goes from town to town, doing silly things and committing unspeakable acts but despite all efforts, the creature seems unsatisfied...so it decides to just die. On a ledge and ready to jump, the host is finally awake but the balance is lost, and they tumble down and down to the underworld. The strong smell of burning flesh hangs in the air and the creature is home at last.
Alas, the host becomes the past.