Amane a gifted young samurai ends up on the losing side during the Battle of Sekigahara. With his surviving clan members executed before his very eyes, Amane expects the same fate, but is instead tossed into the giant pit of corpses. Days pass in the rotting corpse pile as Amane begins to lose his sanity. Finally he gives in and feeds off his fallen clan members, turning while still in the pit.
Years later following the loss of his former master, Amane exists only as a wandering ronin until he joins the Toshinaga Clan. For centuries he remains in the darkness, an enforcer and assassin, until the head of the family is assassinated by a rival yakuza faction. After 350 years of service, he is released after one final duty: to kill the man who brought an end to his clan.
There is nothing darker and more vicious than those who prey on mankind, and only one creature has seen and experienced it all: the vampire.