The ancient deity Zhulong possessed a divine brush called “Painted Heart.” With ink it could create objects, and with a stroke it could bring life into being. Three thousand years ago, a young painter used it to paint something that should never have existed: a faceless clay doll. He gave her features, a soul, and a name: “Gui.”
This act defied the Heavenly Dao. The painter's memories were erased, and he was cast into the cycle of reincarnation, doomed never to be reborn. The clay doll was sealed as a mortal, her soul incomplete in every lifetime, afflicted with what was called “Soul Loss.” Zhulong watched coldly for three thousand years, waiting to collect its debt.
In this life, the painter was reincarnated as Ji Xun, and the clay doll as Ji Gui. They called each other brother and sister. By chance, Ji Xun obtained his father's legacy, the Strange Creatures Register, and learned that “gathering seven demon souls can forge a damaged soul whole.” He then embarked on a path of hunting demons. What he did not know was that every demon he hunted helped Zhulong break its seal, and every step closer to the truth brought him nearer to the choice he could not bear to face.