Pandemonium

Pandemonium is the heaven of the Fallen God. The lair of dark angels and dark valkyries, it is a spirit realm dimension of the Monster Girl Encyclopedia world where time flows strangely. Although most monster girls would spend all day raping men if they could, in Pandemonium the power of the Fallen God suspends the normal rules of exhaustion and appetite so that this is literally what happens.

Exactly how the passage of time is altered in Pandemonium isn't clear; "space-time is warped by the power of the fallen god, and the same moment continues on forever", but the growth and harvesting of depravity fruits implies that there may be some sort of progression from one moment to the next.

The general information on spirit realms suggests that, despite Pandemonium being a different dimension, travel and trade with the regular world is probably common. Dark priests who have finished their missionary positions (hurr) in the human realms retire to Pandemonium with their husbands, but the realm may also serve as a destination for other monsters' honeymoons, and the ubiquitous Sabbath is likely to maintain a branch there.