A trading passage linking two worlds turns one demon into king of the demon clan, and another into the Demon King of the human world!
"Give me a dozen bottles of your potions. Memory enhancement, strength enhancement, beauty enhancement, a few bottles of each..."
"Sure. Five thousand people's malice."
"Bring me some of your treasures. I'm going to blow up the Toilet Shrine."
"Sure. You can have them for free. I'll take the resentment and despair of the dying."
"Don't mess with Earth in the human world. There's a sinister, reckless fellow over there!" declared the newly enthroned Demon Emperor.
This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.