In the video game Demon's Souls, you must face the Old One, who is presumably the entity mentioned in the opening:
On the second day, upon Earth was planted an irrevocable poison
A soul-devouring demon
As this text appears on the screen, we see a beach with a distinctive rock formation, covered with hooded figures.
In the game's ending, we see this beach in person when we descend below the Nexus to finally face the Old One. I'm assuming it's the same beach because the same rock formation can be seen. My question is, do we know where this place is? It seems meaningless to simply say it's 'below the Nexus', because the Nexus seems to be primarily a metaphysical construct, and anyway we don't know where the Nexus is either (do we?).
I realise this question probably doesn't have a straight answer, but it would be nice to shed some light on it.