I Search for Collapse in the Eerie World

I transmigrated into a world where urban legends can kill and conceptual rules are power.

People here fear the paranormal, wield supernatural entities, and struggle to survive under a fixed set of rules.

And me? I'm just a passerby looking for a bit of fun.

When the “Infinite Corridor” traps and kills everyone who enters, I softly ask the wall, “Do you know what a Klein bottle is?”

When the rule of the “Echo of Death” is “understanding means death,” I raise a mirror toward the void.

They say I disregard life and toy with the rules.

They're right.

I just want to see whether these things that call themselves supernatural will, when faced with something truly “unreasonable,” break down just like people do...

Until one day, the S-rank concept [World Background Noise], covering the entire city, descends.

Rule: Anyone who recognizes their own existence returns to the void.

The world's supernatural investigators are plunged into utter despair.

And at last, I laugh from the heart.

What a perfect stage.

Now then,

should I be the one to disappear, or should this so-called “world” learn all over again what “existence” means?