In an ancient Japan where the incursions of gods, ghosts, and demons into the living world is an everyday event, an impoverished nobleman named Yamada no Goji makes his living as a demon hunter for hire. With the occasional assistance of the reprobate exorcist Kenji, whatever the difficulty - ogres, demons, fox-spirits - for a price Yamada will do what needs to be done, even and especially if the solution to the problem isn't as simple as the edge of a sword. Yet, no matter how many monsters he has to face, or how powerful and terrible they may be, the demons Yamada fears the most are his own!
Yamada no Goji is a minor nobleman of ancient Japan who has lost everything - except a single purpose: keep a promise to the woman he loved. In order to fulfill his vow, all he has to do is fight a horde of demons and monsters, bargain with a few ghosts, outwit the sinister schemers of the emperor's court, find a way to defeat an assassin who cannot be seen, heard, or touched - and change the course of history. Fortunately, Yamada specializes in achieving the seemingly impossible, so he is sure in some way to succeed...if he doesn't drink himself into oblivion first.