Ruined Civilization

"Watch out for these bubbles."

Gu Sheng turned and warned the others. Bubbles like those produced by the crabs they had seen earlier filled the area. Gu Sheng did not know what other consequences using ninjutsu might have in this strange current, so he did not act rashly. After observing the direction, he swam toward a bright exit ahead.

The group leaped between the drifting rocks, dodging the glowing bubbles as they continued toward the exit they had discovered.

Once they emerged from the cave, another dreamlike scene unfolded before them: a deep-blue ocean, cliffs covered in jagged rocks, floating islands and reefs, fantastical clouds drifting across the sky, and a luminous object resembling the sun.

"Is this all real? Have we come to another world? Could this be the Summoning World?"

The others were all utterly astonished. The strange sight that had appeared after passing through the darkness was so mesmerizing that they were captivated by its beautiful wonders.

"No, this isn't another world. We're still on the moon—inside the moon."

Gu Sheng shook his head and explained, "As for the things in the sky, some of them are optical illusions caused by refraction. In other words... mirages."

"Mei Daizi~"

As Gu Sheng spoke, he turned his head. Mei Daizi immediately understood what he meant. She formed hand seals with both hands. "Wood Release: Wood Dragon Technique."

The wood dragon, over two meters in diameter, was like a dragon boat. After everyone nimbly leaped onto it, it swam across the water under Mei Daizi's control. They encountered some creatures along the way, mostly fish and crabs, but they posed little threat. The moment they spotted the wood dragon from a distance, they busily fled for their lives.

As his feet touched solid ground on the moon, a line suddenly