A sinister and eerie environment greeted them once they passed through the cave entrance formed out of limestone. The walls were lined with the remains of various carnivorous sea creatures, either half-eaten or stripped down to bone. It was to the point that the water in the cave was reddish from traces of blood, and they could practically smell its stench even though they were underwater.

“…!”

The party members’ eyes all opened wide in shock, and they were left speechless by the sight before them. They quietly swam past the area without saying anything—rather, they could not say anything. It was impossible to speak underwater in the first place, and they were still biting down on the airdrop fruits for air.

That was why Mung Bean was the only creature that received the Cayman River’s approval to speak.[1] The turtle cried out, “Krwaaak! Krwak!”

A faint light shone at the end of the cave. It was night on the Cayman River, so the source was definitely not sunlight.

What the party found when they swam up to it was a tangle of seaweed that glowed brightly like a lamp.

“…”

Kang Yoon-Soo pointed at the glowing seaweed, and the others nodded and took some of it with them. The seaweed acted as a lantern, shining light in front of them.

Kang Yoon-Soo told each of them to grab some of the seaweed because the cave was vast and wide, and his wrist device’s flashlight would not be enough to...