Accidentally Summoned as the Demon Lord’s Landlord

When burnt-out apartment manager Noah Bell tries to fix a leaking ceiling at 3 a.m., he falls through a glowing maintenance hatch and wakes up in Eldoria, a fantasy world where heroes are summoned, demon lords are feared, and property law is apparently sacred magic. Thanks to a translation error in an ancient ritual, Noah inherits the cursed Dark Citadel—not as its master, but as its landlord. His overpowered ability? Any building he legally owns can be repaired, upgraded, rented, defended, and weaponized through a magical management system.

Unfortunately, his first tenant is the sulky former Demon Lord Aria, who refuses to leave, pays rent in ominous artifacts, and keeps threatening to conquer the world after breakfast. With a broke elf princess, a dragon accountant, a goblin construction crew, and several overly attached heroines joining his chaotic business empire, Noah decides saving the world is less profitable than renovating it. But when the summoned heroes come to evict him, Noah discovers Eldoria’s kingdoms may be hiding a far bigger scam.