One day, several generations ago, two families were Bonded together by a life long pledge. One family of demon hunters pledging their life service to another. The Walkers and the Dawnings. Many generations of Walkers and Dawnings, Jett Walker and Yuzuki Dawning were born and when the time comes, they like their ancestors go through the Bonding process. The only thing left is for Jett to do his duty, but what happens when his job becomes more than a job?