User blog comment:B214/Volume 21 info & spoilers/@comment-82.199.219.5-20160326131457/@comment-27232228-20160327234320

Also, take note that if all myths are true, there will be several different levels of the Underworld:

- The part where Devils live, the domain of Lucifer and his kin.

- The realm of the souls of the dead, Hades' domain, which connects with Purgatory.

- The real Hell, a.k.a Inferno, where God torments the sinful souls in the nine levels of Hell.