The world is divided into three realms: the Prison, the Earth, and the Divine.
The Prison is filled with monsters, demons, and spirits. Humans live on Earth, and Heaven came into being because of humanity.
Life seemed ordinary, but things gradually began to deteriorate.
The balance was shattered as demons and ghosts ran rampant.
When the gods saw things going wrong, one possessed a person and taught them the art of puppetry, thereby preserving peace.
But a thousand years later, a fourth realm suddenly appeared.
Theme: I'm bored.
