Kim Minseok is okay with being a useful cog in society as he waits to die and be done with his guilt, namely by working at an alternative waste company. But when powerful aura strikes him in the back, and the injured kitty he takes home ends up being a prideful and cantankerous demon, he realizes that angels, demons, and the souls of his dead family aren't going to let him die so easily.

Now that Kim Minseok is a demon with phenomenal powers he doesn't yet know how to use, who knows what he'll encounter!  The training will be brutal on his human mindset in more ways than one, but with his less-cantankerous demon cat guard Chen with him, maybe eternity as a demon won't be so bad.