The World Only I Know

This is the world only I know. Yes, I! The God of Conquest! Apparently...that's who I'm supposed to be. That's who this strange demon girl keeps calling me. Did I mention I accidentally signed this bogus contract? Now, I've got to help her capture these loose souls as if my life, and my head depend upon it because they do! If I don't honour their terms...I'm dead! NarutoxHarem!