According to Japanese Shinto mythology, after death, evil people descend to Jigoku, a world with eight realms of fire and eight realms of ice.
Each soul stands before a mirror that reflects back its sins.
The god, Emma-ho, rules Jigoku and decides where each male soul is sent according to the severity of his crimes.
Emma-ho’s sister judges female souls. Demons, called Oni, inhabit both Jigoku and the earth.
They bring disease, famine, and a host of other miseries to people on earth and torment the souls in Jigoku.