I love Kontentsu's new update, but it's *really* hard to navigate and catalogue everything. If it helps, I found that in the Shallows of Deceit (which I think might essentially be City of Liars B), there's a red humanoid NPC near the uterus-shaped feature that teleports you to a staircase. At the bottom is a door you can only knock on, and at the top is a door that takes you to the tops floor balcony of ???-tsuki's building. It's actually pretty clever, the bottom door is implied to go to ???-tsuki's room (maybe her real-world room?) The area is one-way, you can't return from the stairs and if you go onto the balcony the only way to leave is to wake up or return to the Nexus.