C125 Cyan face fierce ghost

If evil found out during the time when the soul was in the Underworld, the evil would take over the body, thus, the body would not be able to go back to the Underworld since there were no people in the Underworld. The body would have to stay in the Underworld forever, becoming a ghost, or else he would have to reincarnate and become a human again.

Therefore, they had to find a safe place to live