Underground Demon Palace, Blood Transformation Ninth Heaven

Demon Cave.

The Demon Cave lay beneath the ground, a subterranean world. Yet deep underground, it was unlike the dark, damp place people imagined, for there were patches of earthfire and magma in its depths.

Thus, the temperature in the underground world was actually higher than on the surface.

Special spiritual flowers and herbs also grew throughout this underground world, and water was plentiful as well, supplied by subterranean rivers.

The Earth Demon race was a subterranean alien race that lived in such an environment. They even cultivated food specifically for their people here, allowing the Earth Demon race to pass on from generation to generation.

Deep within the Demon Cave stood an exceedingly luxurious palace, built entirely from treasures found underground and used to adorn the structure.

The Earth Demon race called it the Earth Palace, or the Devil Palace—the Underground Demon Palace!

Within it resided the strongest expert of the Earth Demon race, the Lord of Earth Demons, also known as the Devil Master.

If an even stronger Earth Demon emerged, they would challenge the Lord of Earth Demons. Whoever won would become the new Lord of Earth Demons.

"Devil Master, the humans in the upper levels of the Demon Cave have found a damaged Bloodline Sacrifice Array belonging to our race!"

"It is the secret realm ruin destroyed by the humans ages ago. The Bloodline Sacrifice Array inside was not completely destroyed; its main framework still remains!"

"Humans had previously entered the Demon Cave to study that damaged Bloodline Sacrifice Array. We do not know what happened afterward, but those humans eventually left!"

"Should we go up and seize that damaged Bloodline Sacrifice Array?"

"If we can obtain the main framework of that damaged array, we may be able to completely restore the Bloodline Sacrifice Array, summon