Demonspawn (Unabridged‪)‬

Thirteen hundred years ago the world was invaded by demons from beyond the Veil of Night. Mankind was nearly wiped out before managing to drive the demons back into the netherworld. Now, a king's evil chancellor schemes to reopen the Veil and once again unleash the demons. The world's only hope of salvation is an insane boy, himself the descendant of demonic/human hybrids, and the newborn baby he's kidnapped.