“I do not trust humans. They’ll betray you without fail.” So said Aur, the man who would become Maou. After a lifetime of research, he finally succeeds in finding the Dragon’s Vein, the flow of magic in the world. Summoning the succubus Lilu, he sets out creating his domain, a gigantic labyrinthine dungeon. With eternal youth and almost limitless power, the Maou takes on the world.