A strange virus, known as the Demon Virus, attacks the human genetic code, transforming people into monsters with demonic powers. One particular monster is stalking the streets of Tokyo, ripping open young women to devour their livers. A famed psychic holds the secret to the identity and purpose of this monster. Now it's up to two molecular biologists, self-proclaimed Bio Hunters, Koshigaya and Komada, to reach the psychic and his beautiful daughter, before it's too late! The Demon Virus is out to conquer the world...

Yoshiaki Kawajiri's (Ninja Scroll, Wicked City) masterful writing brings Fujihiko Hosono's popular comic book to life with style and suspense. Two molecular biologists, Komada and Koshigaya, the Bio Hunters, possess a secret weapon Komada, infected with the virus, has the remarkable ability to control the virus within his body. He can also detect the virus in others, and he can destroy it. The Bio Hunters must race against time, risking both their lives and Komada's humanity, to stop the Demon Virus from taking over the city. Bio Hunter is a complex adventure, filled with plot twists and pulse-pounding action.