The mastermind leads and controls everything from behind the scenes. “Buy up all the food supplies entering Milan. Let’s starve them to death.” Cutting off the enemy army’s logistics is fundamental. “Give some money to that family and have them betray properly.” I scatter the enemy even before the war begins. I am the Black Merchant in Another World.

I’ve been struggling for over a decade in this world where magic is equivalent to science. And now I’ve realized that my employer is the protagonist’s enemy. …Boss, can I quit my job?