I had a good life. I was lazy, didn't really do much with my life, but I had a good group of friends and family that loved me. Then came the Apocalypse and everyone died. I was made into a Demon as punishment for my sins, but instead of becoming powerful I was weak, I had to steal and manipulate just to survive.

I died a hundred years ago and I'm still the bottom rung in Hell. I'm just scraping by, not living. And before I was summoned by a mortal I planned to escape Hell myself. Now I'm free I have no interest in going back. Even if it means that other Demons will start seeping into the mortal world I'm staying. After all, now I'm free I can start summoning my old friends.

Protecting this new world so I can live out of hell with my old buddies? Sure, I can do that, might even be fun, especially if I get to kill the Demons that made the past hundred years absolute hell for me.