Juvenile Rising (A Sequel to both Juvenile and the Blood Thirst Series)

Leaving the door to Tartarus opened is never a good thing, and Juvenile had done just that.
Juvenile has been testing out his new powers and learning about his new role in life. Unfortunately, he's been taking his sweet time about it.
That luxury comes to a screeching halt when two seriously deranged entities escape from Tartarus; one fallen angel and one particularly evil demon named Legion. Now Juvenile has to learn on the fly to succeed at stopping them or lose and cause the end of the world.
Can Juvenile succeed and save a kidnapped Sarah, or is the end of life as we know it at hand?