Apocalypse: Rebirth in the Devil's Contract

In the third millennium AD, humans discovered a demon relic on the earth and accidentally opened the door to demons. Demons invaded the earth and the apocalypse reigned. People had to sign contracts with demons in exchange for power. When the Exorcist Alliance fell and tried to exchange the earth for eternal life, was he the only one who could save the earth... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.