Splash.

My steps squished against the damp ground as I made my way through the passage.

Seong Yul had been left outside to wait.
There was no need for him to come along.

Splash— Splash—

Each step echoed against the watery ground, the dim passage shrouded in darkness, with no lanterns to illuminate the way.
The stale air brushed against my senses, but none of it bothered me.

Even in the pitch-black passage, I could see everything clearly.
The thick, oppressive air was merely unpleasant, incapable of causing me any real harm.

After walking for roughly half …