Transmigrating to the Abyss to Build Infrastructure

The vampire prince Ximeilai transmigrates to another world, where it's hell mode from the start.

The Abyss is barren and desolate. Every monster is sickly and underfed, too scrawny to even sink his fangs into.

The prince is furious. He defeats the Demon King, takes over as boss, and vows to conquer the human world so he can eat and drink to his heart's content!

The demons: "Your Majesty, please calm down. We can't win, we really can't. We don't even have half as many demons as the human mages."

Little Xi: "Humans can have so many babies? That's great! We'll never run out of food. Charge!"

Who could have guessed that before they even made it out of the Abyss, the human race would send them packing?

The prince reflects hard on the defeat, learns his lesson, and decides to first boost the demon realm's productivity, improve the demons' quality of life, and increase their population before attacking the human world.

Years later, the prince is surprised to discover that before conquering the human world, he'd already led the demons to prosperity. They have plenty to eat and drink.

Little Xi: ???

This is a forthcoming story.