The cry rips through your mind as you hunger for it. Your craving must be fulfilled. You need it.
A lone man walks down the street. You grin as you chase him down.
He turns, cries out in fright, and raises his arms to fight you off. Only, you are faster and more agile than him. You have the upper hand.
You pierce his neck with your teeth, drinking the hot, coppery liquid in ravenous gulps.
Your craving has been met.
This, my friends, is a Nukekubi. Nukekubi (removable neck, missing neck) is a creature that does not know that she is a creature. She is a vampiric version of the Rokurokubi. , which translates roughly to pulley neck.
By day she is a normal woman. It's at night that her head detaches and and goes flying about looking for victims.
The woman can pass this to their daughter.
Some say that there are lines or wrinkles around the neck where the head comes off the body.