I froze, staring at Isolation Room B14.

Creak, creeeeak.

The rusty hinges screeched like a wailing ghost as the door to the isolation room began to open.

The door that was never supposed to open. And from the darkness inside, a black silhouette emerged…

"Run."

Without hesitation, I turned and bolted toward the corridor exit.

I could hear Supervisor Park Minseong running alongside me, his footsteps frantic and urgent. My survival instincts drove my legs forward even as my mind reeled in confusion.

‘What is this?’

What the hell is going on?

‘The rules…’

Rule #4: Ignore the sounds from …