What do you do when you get summoned to another world by the Demon King herself? Follow your dreams to become the greatest Slave Master, of course!

Tokunaga Mamoru was just an average high school boy when he found himself summoned as the new Demon Lord of Greed. In a fantasy world in which he is the bad guy and everyone wants to kill him, he must fight against the ways of the world itself in order to survive and make his dreams come true.

This is the story of how a righteous young man finds the ambition to become the greatest Slave Master.