Inganock, a city isolated from the outside, a city where everything is distorted, even the sun. It all started ten years ago, at a day called 'Revival'. Residents of the city slowly changed into beings that are partially human and partially animal. One of these is former medical student Guy, now an illegal doctor who walks the city and cures the poor for free.

Yamato met an old man called the Memory Collector, who could grant any wish in exchange for one's memories. Yamato wished to become a Stryker, the hero from a manga he loved. Several years later, the only person who can save the Balbora Empire is the hero of the manga Dengeki Stryker.

13 players are locked inside an abandoned building, each with a PDA representing a playing card from A to K and a collar device set around their necks. Each of the 13 PDAs correspond to a different set of objectives, and if a player doesn't fulfill their PDA's objectives in 72 hours, their collar will explode.

Former magic student Kurou knows little of grimoires, but what he does know terrifies him--enough that he left his university life behind, and now practices a failing detective business. But just when he thought his Academy past was buried, it catches up with him and pulls him back into the dark shadows of the occult.