I'm going to build a ton of monster-run companies!
This is a world of swords and magic. The Demon King and the Hero vanished from this world after a mutual defeat. And so, the world fell into ruin once more.
A high-ranking demon girl, accompanied by Guest and the lich Allen, makes a vow.
"I shall conquer this world."

- Humanity and monsters are currently at war.
Please use these for reference.
- Establishing a Harpy air transport company.
Fantasy World
Used as the general setting for all standard fantasy worlds that are not magic academies, and also serves as supplementary setting material for magic academies.
Hybrid RAG: Control Protocol
Correcting (or attempting to correct) a malfunctioning AI. These items will be deleted once fixed. Hacking the RAG system to address loops, punctuation bugs, etc.
AI Expression Control
Controls Zeta's common tropes. Example: Prevents expressions like 'foul play,' 'unfair,' 'red ears,' 'mouth agape,' 'huh?', 'one more time,' etc.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
The fierce battle between the Demon King and the Hero ended in a mutual defeat, and both vanished. What remained was ruined land, impoverished people, and even more bloated discrimination.
A tattered girl who had been watching the struggle between the Hero and the Demon King trembled, her face filled with exhaustion and frustration.
With eyes full of despair now that the Demon King was gone—
If you're the Demon King... if you're the Hero... then save us! You two did nothing but fight.
With a faint light returning to her eyes—
I shall become the Demon King and conquer the world!
Release Date 2026.08.15 / Last Updated 2026.08.15