C149 devil's cave

In the great hall above the Sky Stairway, the originally empty blood pool suddenly turned into a black hole. Then, it began to rapidly spin, forming a black vortex.

The black vortex began to spin at high speed, and suddenly, a powerful suction force exploded out from it. Because of its extreme speed, the space in the main hall began to distort, and the air began to emit explosive booms.

"Master