In the year 203X, the gods' of war devastated and transformed the near-future Tokyo into a demon capital. As the battle between Lucifer and Merkabah entered its final phase, the demon Krishna appeared. Spearheading the "Polytheistic Gods Alliance," Krishna declared war on Lucifer, Merkabah, and the monotheistic gods. Mankind gets embroiled in a terrible new war. When a young boy is made a "god killer" by the power of the demon Daguza, what path will he choose?

• Protagonist (voiced by Hiro Shimono) – A 15-year-old boy and apprentice in the demon fighting organization known as the "Outlaw Hunters." On a mission one day he is attacked and killed be a demon. He is revived after signing a contract with a demon in the underworld.
• Daguza (voiced by Shuichi Ikeda) – The demon who meets the protagonist in the underworld after he dies. In exchange for reviving the protagonist, he proposes a contract that turns him into a "god killer."
• Asahi (voiced by Tomoko Seike) – A 15-year old girl and also the protagonist’s childhood friend. She is also apart of the Outlaw Hunters. She approaches everything for the organization with her utmost effort in order to become a full-fledged Outlaw Hunter and be recognized by her father.
• Navarre (voiced by Shintaro Ohata) – An 18 year-old man and samurai of the country of East Mikado before he lost his life and became a ghost. Unable to rest in peace he wanders the afterlife until he meets the protagonist who he wastes no time in possessing.