Of course! Forbidden unwritten heart areas go. You live here now, you're up in this thing, unlock the deep lore.

There's a hall of rooms with nameplates on the doors, familiar ones because they correspond pretty much exclusively to people you know. People Vergil cares very much for, specifically, and well there aren't really any of those you don't know. There's another giant library, and a music room, a study, one that's just full of swords... What sort of place do you want to start?