SCUM: Rise of the Reincarnated Criminal

A hardened, irredeemable, and unrepentant convict is given another lease on life after he is executed for his many and varied crimes. Reincarnated into the body of a teenage boy in a different version of our world in Japan, will he be able to go down a more straight and narrow path or will his desires once again lead to his downfall? Guided by a mysterious voice that seems to be actively helping him achieve his wishes, will he rise to greatness in this new world? or will he sink once more into a pit of depravity as SCUM?

For what gods or demons would let such a man loose on society once more?