In the northern plains of the Endless Land, there is a place called Flame Mountain. This area is perennially dry and scorching. The further into the mountain one goes, the hotter the ground becomes. Even halfway up, the seemingly rock-hard stones are actually soft; you can poke a stick into them easily.
This peculiar condition results in there being no animals in the mountain year-round, nor would anyone bore themselves by climbing it. The only covering on the mountain is a fiery red plant known as the Flame Tree.
At the mountain's summit, one can clearly see the lava flowing. Strangely, there is a giant white skeleton lying across the entire mountain top, seemingly that of a snake, unfazed by the smoldering lava. As night falls, Flame Mountain transforms into a pale red, and the flowing lava gradually surges to form solidity. By midnight, a massive pale red lava gate appears, marking the entrance of a path for the Demon Clan to the human world.
