What to read after Guardian: the Beginning?

In the year 2017 most of mankind has become complacent and reckless, depending mainly on logic and finite wisdom. Psalmulus Grey, an emotionally scarred, fifteen-year-old participant of this world order, lives within its guidelines until one night when an angel of God appears before him and makes it clear that he is one of the Fathers chosen. Meanwhile a much more sinister plan is unfolding within the city of Neo Creek between Maxwell Steeleworthy, a wealthy capitalist, and Zegudalia, a demonic being from the Abyss. In an epic battle of divined proportions, Psalmulus manifests vast supernatural abilities as he struggles with the decision to fulfill Gods will for his life and become a Guardian of Light or succumb to his own vengeful desires. Many forces from the side of light as well as darkness rise to the occasion to see their goals met as Psalmulus is forced to do battle with humans and demons alike, but most of all--himself.