Demoness's Art of Vengeance - Chapter 19: The Forgotten Marriage Arrangement

I’ve become the ultimate crafting all-master character in a game world, excelling at everything except combat.And now, I am the only one who can save this Northern Grand Duchy.

Cao Xin, a young man on earth, died in a car accident, traveled to a troubled world where supplies were scarce, and obtained a “Bronze Immortal Gate”…

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- Description from novelbuddy

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.

A polite and lethargic boy was reincarnated in another world as a vampire bishoujo.