"I am!"

"Well then come join the little gang of the-only-people-currently-in-Milliways, is this your first time, should I give you the introduction?"

"Sure, let's hear it."

"This is Milliways, the bar at the end of the universe, anyone's guess which. The bar's sapient and if you talk to her she'll use napkins to reply. Your first drink's free and subsequent ones cost prices appropriate to wherever you're from. The door appears at random places to pick up random ineffably interesting people, and while you're here time will be paused wherever you're from. Oh, also, Ens, I forgot, there's translation magic going on here, we probably don't actually speak the same language. I probably forgot something but yeah."

"I still don't think I'm that interesting," says Ens. "Even if I was, I don't know, here to do your makeup, I don't have my kit with me."

"Well, given that it's just us at the moment here," she says, gesturing around, "maybe the door wanted us to meet?"

"Why?"

"Dunno." She doesn't comment on the thing she and Ens have in common, she's more tactful than that. Marginally.

"So, does one introduce oneself to strangers one meets in a magical interdimensional bar?"

"Um, we did."

"I'm Sadde, she's Ens."

"Elizabeth. Pleased to meet you both."

"So what's your story? I have superpowers, she has incredible make up skills and is from a world with a bunch of different weird magic and her boyfriend has the water version of it, what about you?"

"Oh, I also have superpowers," she says. "What do yours do?"

"I can conjure things," she says, and once again is holding a ping-pong ball. "Pretty arbitrary things, they don't even need to actually exist or be all that physically possible."

"That sounds useful."

"It really is! And in my world people go out in costume to fight supervillains with superpowers. So, what are yours?"

"I'm the Vampire Slayer. Costumes not traditional."

"...that doesn't really mean anything to me. What's the Vampire Slayer?"

"One who slays vampires." She smiles. "Sorry. It's... a little difficult to explain."

"What's a vampire?"

"Where I'm from, they're fictional, and what most of them have in common is needing blood to survive, having a negative relationship with the sun, being immortal unless killed, and being severely allergic to stakes to the heart."

"Mostly accurate," she says. "But they aren't at all fictional where I'm from. So at some point, someone decided that they needed a powerful champion to kill vampires and protect humanity, and for some reason they decided the champion should be a teenage girl, so now every time the previous Slayer dies a new teenage girl gets the superstrength and super combat skill and super upsetting prophetic dreams."

"That's... that's weird."

"That's really weird. There's only one at any given time? Always a teenage girl? Just how many vampires are there?"