In a remote corner of the Sea Domain of Nihility...
It was a place where red clouds gathered, many volcanoes growing on that sea of clouds. It looked bright from a far distance due to the sparks and fire because each volcano here was actually a furnace.
Many warriors cultivating Fire power Upanishad were scattered by the mouths of the fiery volcanoes. They inhaled and exhaled smoke and fire to quench their bodies or weapons. They all had skin like the burning red rocks, their hair red and bodies average.
They were the typical members of the Heavenly Craftsmen Clan.
This place was called the Volcano Cloud Sea, a unique area in the Sea Domain of Nihility. Most of the blacksmiths of the Heavenly Craftsmen Clan would stay in this area to cultivate and forge weapons as this volcano area was the natural furnace that could melt even the hardest metals, allowing them to make them exquisite weapons.