O' Death (SerialKiller!Destiel Fic) *Warnings In Description*

Dean Winchester is globally-known serial killer The Reaper and is notorious for his violent killing methods. People believe he's moved by rage, trying to find some kind of vengeance for his parents painful death.
What they don't know is that there is no reason.
He does it because he needs and wants the stimulation, the thrill of it all. He likes to watch the hope fading from peoples eyes as he rips the soul from their bodies. Its better than sex, better than any kind of drug.
And by God, he's going to get any kind of thrill he can in any way he can.
~*~
Castiel Novak is another globally-known serial killer distinguished by his unique torture method from the time of the Vikings, giving him the claim of Death's Angel. He's out for revenge and he know that even if he gets it, he won't be able to stop. He can't stop. God needs him to weed out the sinners. They must be purified. The people who did him wrong must repent, as well as all sinners he stumbled upon along the way.
~*~
WARNINGS:
Y'all, this is not a nice story. At all. It's filled with graphic descriptions of murder, rape, drug use, extreme homophobia, swearing and/or homophobic slurs, gore and violence. Please don't read if any of this is triggering at all!