I was working as a merchant as usual, and before I knew it, I had become a Demon Lord in another world.

A young man named Theo, 18 years old and completely single, made his living as a simple trader, getting by day after day. Then, a mysterious black hole suddenly appeared and sucked him into another world.   After he regained consciousness, he found himself surrounded by hordes of demons right in front of him. The demons all spoke in unison:   “Welcome back, our Demon Lord.”   The tale of an ordinary young merchant’s transformation into the Demon Lord in a world of swords and wondrous magic is about to begin. The story of an ordinary merchant becoming a Demon Lord in a world of swords and wondrous magic is about to begin. —