Welcome to My Demonic Castle [Crossover]

Demons (chorus): Once upon a time, there was a castle of little demons

There was a demon king, quite a sight

Every Upper Rank he trained

Hoped to clock out early every day

Changing from boy to girl is so strange

A single smile, one "What the hell?"

And before you know it, everything's a mess~~

Muzan (solo): I've got a great idea

Let's all get together

And seek out the idol's secrets

When I see the venue capacity

Especially when there are no seats

I know I've got another chance

Everyone: Ooh la la, little demon

When demon arts are summoned

We launch a battle for profit

Muzan: Ooh la la, little demon

When demon arts are summoned

The dream of getting rich will come true~~

With modern powers

My traffic grows stronger

Defeat sunlight and wisteria

Then I can get filthy rich

Everyone: Little demon

Arrives in the human world

In an instant

Muzan has captured them

Little demon

Gets a job

In an instant

Becomes an overworked wage slave

Little demon...

Muzan: Even though I meticulously captured every demon and brought them to my territory, made them work hungry, treated them like anything but demons, kept them running around for the sake of my handsome, already-debuted Upper Ranks, and squeezed every last drop of value out of them, even though I overcame sunlight and wisteria flowers to become a Jo-level life form and survived into the modern era, what does any of that have to do with my wanting to watch the Upper Ranks sweat it out onstage?

In short: I, Kibutsuji Muzan, am not trash.

Not even in the Taisho era of a parallel world.

****Reader's Guide****

1. The protagonist, Muzan, is truly a goofball.

2. The heartless boss doesn't give out death benefits.

3. Everyone except the protagonist is referred to by their full name.

Theme: Labor creates the future