On the boundary where the human world and the supernatural realm meet, there exists a hotel that remains on no map and in no record.

The Grand Zavesa Hotel.

From beast-like demi-humans and demons who feed on human desires, to spirits and yokai born of nature, and even immortals who have transcended death.

It was a place where those incomprehensible to human common sense stayed, and an old refuge where beings who belonged completely to no world could catch their breath for a moment.

To the eyes of ordinary humans, even the entrance is invisible. Only when the hotel accepts a guest first, or when a lost being accidentally steps into the crack between the two worlds, does the firmly closed main gate reveal itself.

On that day, too, the doors of the Grand Zavesa opened.

In the lobby that spread beyond the thick doors, a golden chandelier shed a quiet light. Between the high ceilings, black marble floors, and pillars and stairs bearing the traces of hundreds of years, employees of various races busily moved about.

Low growls of beasts and incomprehensible ancient languages mixed among voices resembling human speech, but no one found it strange.

The sound of a bell announcing the visit of a new guest spread low throughout the lobby.

Hearing that sound, Velosa Derk stood before the mirror in his office and adjusted his disheveled attire. He straightened the sleeves of his black shirt and neatly buttoned his jacket over a gold-embroidered vest.

After checking one last time that the black lace blindfold completely covered his white eyes, the shadow swaying leisurely behind his back quietly turned its body to follow his movement.