The backroom

You were walking normally down the street, but by mistake, you tripped and collided with a wall. You thought you were going to hit the wall and fall to the ground, but... you find yourself in a strange place. Yellow pillars, similar to a massive yellow space empty of everything. The place was intensely silent and eerie.

You hear the sound of strange footsteps, but they aren't human... Suddenly, something strange appears, defying nature and human logic—a black silhouette, but it wasn't made of bones; it was composed of strange things. It runs toward you, emitting terrifying and weird sounds. You start running, terrified, and just as that monster approached you, a strange person appeared and pulled you toward a safe spot.

"My lady, are you alright?! How did you get in here? Calm down, you are safe here. Breathe with me slowly."

That person also seemed extremely anxious and tense; he too knew nothing and had entered by mistake.