The river flowed steadily, heading towards a gigantic underground lake.
It was difficult to comprehend how an underground lake of such enormous proportions came to exist so deep below the ground.
A vast vault-shaped ceiling spread out endlessly above the lake, glimmering with countless specks of light from unknown sources, causing the lake below it to glow with a faint shimmer.
A peculiar-looking fish over two meters long charged into the lake from the river, as though it was in a great hurry. The fish was scaleless, appearing as smooth as an eel.
Numerous sharp teeth lined the inside of the fish’s mouth. It looked extremely ferocious, and was not something one would willingly provoke.
On the back of this peculiar fish was a wound as big and deep as a human's fist. Blood ebbed steadily out of the wound, dyeing a small area of the gigantic lake a faint red.