And then someone is standing there, looking around. "...Summoner, I believe you've made a poor choice of party decorations."

"I. What."

"Your geometric floor decoration has accidentally summoned a random fairy. It'd be hilarious if it wasn't so dangerous. You're lucky I'm one of the nice ones."

If those wings are a costume, they're a damn good one.

"I-" she starts, but then she actually looks at him. Then she tilts her head. Then squints.

"Okay, so, either you're mad and somehow managed to get in here really quickly and you put wings on your back to complete the ensemble... Or not."

He raises one eyebrow and starts floating himself a foot off the ground. "You somehow got to high school age without learning about summoning, this should be interesting."

She raises an eyebrow when he starts to float. Well, that's one of the hypotheses down the drain.

"... 'Summoning' is not common knowledge. I would know if it were anywhere near common knowledge, and it's not. I've not just been sequestered away in some hidden community, fairies are seriously not a thing. ... Or they weren't a thing."

He notices the cell phone and motions at it. "...Congratulations, your hilariously terrible circle has managed to pull me into an alternate universe, or possibly just the past."

Of course it has.

"It's 2015, and in case it wasn't obvious we're on Earth. Does that answer your question?"

"Actually, no, Let me look something up." Some kind of tablet comes out of a coat pocket, telekinetically. Tap tap tap. "Alternate universe. Summoning became common knowledge in 2005 or so, in mine. This is the strangest thing to happen to me in the last century."

Telekinetically. Really. Well, that's interesting.

"... How long do fairies live? And why do you keep calling my circle terrible?"

"I have never heard of a fairy dying, we don't age or get sick like humans. This circle has zero bindings and called for a random fairy. This is a terrible idea. If I wanted to I could be in the nearest city throwing skyscrapers around by now."

"Oh. Well. Thank you for not, but what do you mean 'bindings'?"

"They... I shouldn't explain summoning any more. If you get it into your head to summon the other kinds of daeva, and getting me wasn't some sort of one-time fluke, and you aren't good enough at bindings, they could literally destroy the Earth."

"I mean, I wasn't leaping to doing whatever I did with this one again, but yeah, that's a good point. But now I'm curious... what other types– no, okay, nevermind."

She looks at her surroundings again, reminded of what she was doing, and says, "I've... got to text some people. And presumably get rid of these shapes."

"I have to think, this is potentially great for your alternate universe's humanity, summoning can be very beneficial, but equally potentially apocalyptic. On the Earth I know there was at least one case of nuclear weapons being used just to deal with one rogue daeva. If you have a relatively hidden place I'll be happy to wait there for a little while."

"I... Yeah? This isn't my place, actually, my friend's out right now getting some stuff, so. Uh, I might just have to ditch the party. My place isn't far and my mom's out right now so you can probably wait in my room, anyway, but. Uh. Yeah, just a sec."

She starts texting people on her phone. Coming down with a sudden illness? Sure. That's a fine excuse. She can use that.

He'll only just stand there patiently for about three minutes.

That's fine – Eva's good at texting.

"Okay, right. I'm ill and can't turn up to the party," she says, kinda pointlessly. "Do I need to do anything about this?" she asks, gesturing towards the shapes on the floor.

"...Not unless anyone's liable to copy it." It's pretty obvious he's trying to limit the amount of information he gives her.

"Okay, well, probably not, unless taking a photo of it somehow counts? I don't know how much people might get when it's crowded in here, but if it has the chance to do that much damage... It's safe for me to just get rid of bits of it, right?"

"Yes, rearrange it or remove a few bits and it'll be safe."

Luckily it was just bits of coloured tape and paper, because that's what all the cool kids use for decoration, so that's pretty easy to do. She gets rid of the circle and reshapes some of the other bits.

"Right. We should be ready to go, then? ... Can you hide your wings?"

"Unfortunately not, but if you give me directions I can be extremely fast, not much time for anyone to see me."

"Okay. Right." She thinks for a second, trying to come up with a good description of how to get there from a bird's-eye view, then decides just to give the directions to get there along streets and a description of her house that should make it somewhat recognizable.

"I'll be there in like 10 minutes."

"I could carry you there. That's the whole point of summoning fairies, getting them to move things."