To the north of the central circle of the devil kingdom is a place that all the demons are reluctant to approach. There is no other reason. There are continuously erupting magma everywhere. From time to time, there will be flames coming out of the ground, and there will be purple sky fire falling from the sky on this land.

there are no more mountains here, only one is said to be the highest mountain in the demon world, the solitary sky peak.

the whole mountain is covered by purple fireworks, and the rock of this mountain is extremely solid. It has been burned by the purple flame of tens...