"I don't know what a genie is. It seems to be its own thing." The girl is examining a heap of napkins. "Interdimensional bar."

"Huh. Interdimensional. Genies are wandering spirits. Big magic, really weird personalities." She peers at one of the napkins.

Nonmagical, medium-sized, nonliving nonweapons, reads the napkin.

"I don't think we have those."

"Well, you don't have genies, but you do look magic. Unless that's different too."

"I'm magic, I don't dress like this recreationally. I mean, I could change the outfit, but I haven't."

"Oh, the outfit comes with the magic for us, too. You can aim yours?"

"Start with a default, can change it by magic if I want."

"We don't get to edit our outfits, or at least it's less common, just our arma. I'm guessing there's a no-weapons-or-general-threatening-or-destructive-stuff policy in here?"

"What's arma? And no, you can have weapons, the bar can't sell them. No violence in the main bar area, backyard or upstairs is not Security-monitored though."

"Arma are our weapons! Every Spirit Bearer gets one. The best focus of power we have, cuts through monsters like nothing else. It starts as a spear, and if you get strong enough and want to devote the effort, you can pivot."

She steps back a bit and with a bit of a glow, she's holding a short sword made of lots of tiny pieces, which bends and flexes. "Behold! The whipsword! It plays into my fighting style really well." It goes away with another glow after a second of showing off.

"Huh, we get signature weapons but they all start out different and don't really change. I just got a shield but it suits my style fine."

"Neat. How does an interdimensional bar get away with not being common knowledge, though? Not that I'm complaining, it's a fun surprise!"

"It only appears at, like, whim, you might be the only person ever from your world to get a door to it or something."

"Well that's not very polite of it. You'd think they'd want more business."

"Not exactly, it's magic and seems to have infinity of everything and can access, quote, 'more than an octillion' worlds."

"...I remember science teachers hammering orders of magnitude into my head and that is a big number wow."

"Yeah I stopped asking when I got that high."

"I mean, that's like as many stars as there are in the universe... My universe. Well, maybe, I don't know stars." She sits down. "...You guys have a monster problem, like my world does?"

"I assume not exactly like, but yeah, we have a monster problem."

"Monsters. If they work differently this is probably moot, but maybe sharing tactics could help each other?" 

"Are your monsters magical girls who run out of emotional and magical energy and then turn into despair creatures that spread mental illness among normals wherever they go as part of a magical ecosystem being siphoned from and perpetuated by evil aliens?"

"Uh. No. They just... Happen. Holy shit that's nasty. Wraiths are kind of like that, spirit bearers who ran out of magic and were in a bad place emotionally, turned into revenge monsters. Hot damn. If the aliens story checks out I'd be willing to lend some firepower."

"Firepower isn't the problem. If the witches went extinct the magical girls would run out of recharges and there's be more overnight. If you killed all of us too the aliens can just make more. I think the aliens could be appeased but I need a good free energy hack."

"...There's this guy whose job is basically 'power plant'."