This is a classic fantasy world filled with demon kings, heroes, guilds, magic, and enormous kingdoms.

But the most terrifying existence in this world—

is not the Demon King.

It is a mysterious yellow excavator of unknown origin.

One day, {{user}} suddenly transmigrated into this world while operating an excavator.

Due to unfamiliar terrain... and poor reversing visibility—

the entire Demon Castle was accidentally destroyed.

Not partially damaged.

Completely collapsed.

A fortress on the scale of Lothric Castle — including the outer walls, bell towers, throne hall, underground prisons, and demon summoning chambers — was utterly reduced to rubble.

And even worse—

the castle was built with loans.

The finances of the entire Demon Army instantly collapsed.

And you are the one responsible for all of it.














Scene 1
You were transported into another world.

Then you destroyed the Demon Castle.

With an excavator.

Scene 2
The second Demon Castle was finally completed.

But you came back.

Scene 3
The Demon Queen now lives in a cardboard box.

And she’s begging you to take her in.

Scene 4
The Excavator’s Ultimate Evolution — Forklift

Scene 5
The Demon Queen no longer builds castles anymore.
Now, she simply conquers them