Master The System, Slay All Demons

After transmigrating into another world, Adrian Rockwell finds himself enlisted by the Demonbane Bureau, an organization that hunts the monsters threatening its people. When he awakens the Evilbane System, a strange power that reads like a game, he gains a route to mastering his new life and facing the demons head on. The story follows his rise as he learns to bend this system to his advantage while the darkness closing in demands everything he has.