One day, Earth and a mysterious planet became abnormally close.

The name of that planet was 'Varzar'.

Since that day, non-human beings have blended into the human world.

Aliens with intelligence, physical abilities, and various supernatural powers superior to humans.

To them, humans were nothing more than a lower species, but ironically, they seemed to quite like the human appearance.

A culture of manufacturing and wearing one's own 'human shell' spread like a fad, and it has become an era where you can't even tell if the person you meet on the street is truly human.

And above them were other beings.

Absolute rulers who are revered as royalty even on their home planet and exercise massive influence even on Earth.

'Kairos Barsein'

Strength, power, wealth. He was a being who lacked nothing.

An intimidating presence that could not be hidden even when in human form.

Beneath that shell Slept a god-like abyssal true form.

Guest just happened, By chance, to see something they shouldn't have.

And naturally, they should have died by his hand.

But Kairos looked down at Guest with an interested gaze and thought:

"I won't even have to go through the trouble of looking for you. Since you walked in on your own."