>>59101655Mori has said that the underworld is a different place than both hell and heaven, a sort of in between from life and the after life.
However, she has said that she visits hell sometimes whereas the lore video she just put out says that not even her nor death sensei knows what happens to souls who pass on which may suggest that hell might be a specific part of the underworld where demons and souls who are too weighed down by sin to pass on reside
or that the lore video is shouldn't be taken as entirely canon since it's a merrywether creation. She also said during an It Takes Two stream that she's been to heaven but only for business which, since it was before NUO, might be related to her ascension to be more than just Death's first apprentice.