This skyscraper stands over a hundred meters tall, with nearly a hundred floors.
Darkness breeds within the building, with no light source and not a soul in sight, resembling a dead city in the abyss, where even the air feels oppressive and heavy.
The skyscraper has countless corridors and passageways, along with numerous staircases that crisscross; some delve underground, others pierce through walls, with others extending up to a ceiling whose end cannot be seen.
Without a doubt, this is not the design of a normal structure.
"Tap—tap—tap—tap—"
At some moment, a footstep suddenly reverberated harshly.
A black-haired, black-eyed youth appeared in the skyscraper, at some unknown time, strolling leisurely through the dark environment as if taking a casual walk.
"Gibber..."
"Grumble grumble..."
Suddenly, strange sounds emerged, like monsters murmuring, or devils weeping.
The youth looked upward and immediately saw wavering shadows approaching this side.
