"I'm Isabella Swan, but when there's a dozen of us named that or similar around I'm Glass, which you may call me. Pen apparently had a little adventure?"

"She showed up looking like a minority my sister and I belong to in an area where that minority was, shall we say, unpopular. I pulled some thugs off of her and she's been staying with us since."

"We're mutants," Edie added. "Pens says that you're in contact with one universe where our kind exists...?"

"Yes. What year is it in yours?"

"Nineteen eighty."

"That's about two hundred years earlier than Peace's current year, but may be otherwise very similar. Would you mind holding the door for me while I have a peek?"

"Sure, no problem."

Glass looks at the world. "It's not quite Peace, but it's closely related. The mutant-related stuff should be roughly alike but I currently don't expect you to suffer an alien invasion - worth checking, but after someone with a more dedicated interest in the place is handling it instead of my first-pass. I can see certain properties of worlds and people by looking," she elaborates.

"Really? What can you see about me?"

"Well, for one thing, you are both of you a type of person I've never seen before - unfortunately I can't even begin to guess what that signifies; we've been referring to existing types as 'green' and 'purple' simply because we have no other traits besides the fact that I can sort them to go on. You're neither. You two are attached; there will never be a world that has only one of you and not the other. Your powers, like those in Peace, are technically not magic as far as my aura is concerned."

"...Huh. I mean, I had imagined scenarios in our own world where we didn't grow up together, but the idea of one of us just not existing somehow never occurred to me. I'm glad it's not a thing, anyway. Not sure what to make of the fact that apparently we're some kind of special snowflake."

"Well, you do refer to yourself as, 'not a normal example of anything," Emily points out.

"Generally I'm not. And I'm not usually a normal example, but I am an example."

"It might be that this third moiety - pick a color, if you like - is just very common on your world and rare elsewhere. Incidence rates between green and purple are known to vary world to world. Aurum's almost entirely green if you only count natives, for instance. And run in families - two green parents will have green children, mixed parents tend to alternate in available samples."

"Um...white, I guess. Do you want to look at more people from our world? And, um. Pen said that resurrection was a thing?"

"I can look at some more people, yes. And we can add your world to the available resurrection pool in one of two ways - bother the admin, which we try to hold down to a minimum, or make anybody from your world immortal."

"...I will happily take immortality! Is that a thing you can do, how hard is it, actually can you make everyone I love immortal?"

"How hard is it? Is there any kind of bottleneck?"

"I can make more or less arbitrary numbers of people immortal but I want to be thoughtful about how I do it, both because it can be conspicuous and dangerous, because it would give anyone who had it a major tactical advantage and I don't necessarily know how you're likely to use that, and because me or someone else on the short list of people with torching distribution has to do it. You don't have a Bell, or I'd just hand this off to her. Bare minimum I want to leave a Janegem in your world."

"Right, yes, that's fair...it's just, our dad is a Holocaust survivor, he saw his parents killed right in front of him...I've always wished I could meet my grandparents, on that side at least, so..."

"Well, meeting them is technically a different proposition from resurrecting them. When your world's added to Downside, well, Downside is set up to accommodate - if not particularly beautifully so - any number of residents, awake and walking around and everything. I'm much less leery of taking you for a visit there than I am of opening up the floodgates for everyone to go back to the land of the living. Especially since resurrected people are unavoidably able to torch - that's the form of immortality we have on hand, it's so called because under circumstances where we would ordinarily die we instead reset to a healthy state under the rather aesthetically pleasing cover of appearing to be on fire."

"I think you really, really need to meet my parents."

"I do not currently have any navigational powers that apply to this building."