A forbidden place deep in the Hundred Thousand Mountains, where the bones of the ancient demon clan are buried after their fall. The spiritual energy is filthy, and humans are forbidden to enter. The monsters in the tomb raise their young in the "gu" method, preying on the weak and the strong.
He was born without knowing his parents, and the old demon raised him with elixirs.
Without parents, there are no shackles.
The demons are now family.