The Evil Door is, believe it or not, a full setting in the series. As its name suggests, it appears to be a gargantuan doorway with a grotesque look. Although a part of the Underworld, its actual resting place seems to be surrounded by literal emptiness. The Evil Door is safeguarded by Alastor Hankyō and Maria Ankoku, who are both quick to determine whether or not a soul (that has recently passed away) can make their way into Underworld territory. And in order to rightfully pass, the victim has no choice but to enter an object known as the "Injustice Pod", which rapidly evaluates the person inside of it.
- Fittingly enough, the Evil Door is sometimes referred to as the Door of No Return, or simply Death's Door.