D, a legendary dhampir competes with a motley family of bounty hunters to track down Charlotte Elbourne, a young woman who has seemingly been abducted by vampire nobleman Meier Link.
Taki and his partner Kai is assigned to go after Daishu for selling a drug from the Rapters's world, called 'Happiness' which causes people to evaporate.
A wind has swept the Earth taking all the memories from everyone. No one knows who they are, how to speak, or how to use the tools of modern civilization. Two years later, a young man who has been re-educated travels across America on a mysterious journey.
Ten Years ago, Genichiro Izayoi died trying to stop the sorcerer Rebi Ra, and as a result Shinjuku became a playground for demons. And now, the day approaches when Rebi Ra will complete his decade-long ritual to plunge the rest of the world into chaos! As Genichiro's son, it falls to Kyoya to venture into the heart of Shinjuku and put an end to the sorcerer his father couldn't beat. Can Kyoya exceed his father's legacy, or will the demons of Shinjuku create Hell on Earth?
A peace treaty between the Earth and the Black World, a parallel universe of demons, is coming to an end. Two cops, Taki, a human male, and Maki, a female demon, are assigned to protect a diplomat who will help secure another treaty. A radical group of demons from the Black World are out to assassinate the diplomat and prevent the treaty; only the bond that forms between the two cops can save the Earth from destruction.