Revelation: Kastor Blackwood Series

When I was four years old, my inept biological parents decided they wanted to summon a demon. They planned to summon one and control him so they could gain riches. However, they didn't realize you can't control a demon, you can only enter into an agreement with them, and so their demon was able to walk out of the summoning circle that they didn't close properly.

The apocalypse is coming. A major demon has decided to start a war that will kill off humanity and give control to his demon legions. Kastor Blackwood was chosen at birth to prevent that war. Will he succeed in finding the guardian and prevent world destruction? Will humanity survive? Will they be able to crawl and scratch their way back from the brink of extinction in a fragile new world? With the help of a few unlikely allies, he may be able to succeed in his task.