Why?!

Drip, drip—

The sound of water droplets echoed through the tunnel-like cave.

The damp ceiling and rock walls were covered in algae that emitted a faint green glow, providing light for the narrow passage.

"Menchi, are you okay?"

Moyu's voice echoed through the tunnel.

Standing on the damp ground, he glanced back at Menchi, who was only a few steps behind him.

Behind Menchi was a completely sealed rock wall engraved with several straight lines. It seemed to correspond to the stone slab they had excavated earlier, or perhaps it was some kind of ability medium.

"I'm fine."

Menchi nodded at Moyu, then turned to look at the glowing green algae on the rock wall, wonder appearing in her eyes.

On closer inspection, the faint light emitted by the algae brightened and dimmed like a pulse, as though it were alive.

Fortunately, there were glowing algae in this passage. Otherwise, they would have been left groping around in complete darkness.

After confirming that Menchi was unharmed, Moyu finally began examining their surroundings.

They were in a narrow tunnel. It was damp and cold. Yet both the floor and rock walls were unnaturally smooth, making it look like a man-made passage.

But Moyu could not see the slightest trace of human construction or maintenance here.

How this tunnel had formed was still unknown.

"A spatial transfer ability..."

Thinking about the black curtain that had swept toward them earlier, Moyu frowned slightly.

He had never expected the Post-Mortem Nen to possess teleportation abilities. No wonder he had not sensed the slightest threat.

In a sense, abilities with teleportation properties truly did not possess any offensive power.

"This is troublesome."

Having been inexplicably teleported into a completely unfamiliar tunnel, returning to the second phase of the exam was basically impossible.

More importantly—

How