[There's a lot she's holding back, but he doesn't need to know about any of it for now.]

It's called a Nexus. I personally think it's in another dimension, but... there's no way to tell. There's multiple version of people here, some even different versions. Not the mention the weird rooms here that turn you into the opposite sex, or cause you to have cat ear, or force you to do things you would never thought you would do in your lifetime.