God's come down to earth and all hell is breaking loose! Enter a world where demons seen only in dreams are real, oceans swallow cities, and the powers of the mind are preferable to guns. It is here in the "Demon City" that Kyoya Izayoi, master of the rare martial art of nenpo, wields the mythical sword Ashura in defense of beautiful Sayaka Katagiri. As the evil Dark Order and the Super Soldiers of the Special Abilities Task Force clash in a race to find the one believed to be God, Kyoya saves a member of the SATF—and lands himself smack in the middle of a mess. Meanwhile, members of the Dark Order ambush Sayaka. Can Kyoya slay the beasts and save the girl? Will Kyoya help the SATF defeat the Dark Order and their plan to destroy the world? It's nature versus the supernatural!

In order to repair the synergy that was distorted by the evil deities in the ancient past, a young boy named Shuri has appeared in present day, but the evil deities harvest the "Groundskeepers" in place to stop him.

In the near future, almost the entire world lies in the iron grip of a huge conglomerate, the Persona Century Corporation. One day, a mysterious good-looking man appears in Shinjuku, one of the few places not dominated by Persona Century. Shinjuku is a dangerous and lawless place, teeming with rebels and terrorists. The stranger's name is Dark Side - and with the help of a small band of rebels, he will attempt to break Persona's stranglehold on the world.

Doctor Mephisto is a man who is as skillful and handsome as he is mysterious and terrifying. He can cure any illness, heal fatal injuries, transform lead to gold, summon vicious monsters to do his bidding and perhaps even…revive the dead!?