The Yang world and the Yin world coexist, and there is an "Yin division office" in the human world - the ancestral antique shop inherited by the protagonist is actually the Yin and Yang judge's office in the human world. The judge possesses the remaining pages of the book of life and death, and can check the sin value of the world, send "divine punishment" (bad luck, disease, and sudden death) to the evil people, and grant "blessings" to the good people.
