Billy Blacksmith: The Demonslayer: The Blacksmith Legacy, Book 1 (Unabridged‪)‬

Billy has spent his whole life keeping his head down in school and trying to survive the endless parade of foster homes. When a 300-pound spider emerges from under his bed intent on drinking his blood, Billy discovers he is the main player in an ancient war between demons and humans. With his best friends Ash-Lea and Greyson, and a reformed demon as his ally, Billy prepares to face an invasion of demonic spiders and the general that leads them.