Golden Sea, Black Reef Battle Zone.

In the vast sea area centered around a forest of rough reefs emerging from the water, a large abyssal rift hung silently amidst the undulating reef jungle.

Numerous dragons and prisoners fought fiercely around this place, appearing and disappearing in the sky and the ocean.

Because the abyssal rift in this medium-sized battle zone had expanded, turning it into a large battle zone, the Black Reef Battle Zone was not as dangerous as other perilous zones, with the fewest high-ranking Legendary beings.