Anime about a guy who becomes a girl's spirit familiar About two weeks ago, at a Funimation panel, they were showing off some anime that they had recently dubbed. One of the anime they showed caught my eye, but I completely forgot what it was called.

As far as I can remember, the plot went something like this:


  By some random circumstance, this guy (I assume he's the main character),  a human, becomes this girl's spirit familiar (or something). Then they go to a special school.


Yep, that's what my brain remembers. If anyone has any clue as to what I'm talking about, please help.

I was at ACen 2015 (15-17 May, so two weeks ago) when I heard about this. I honestly don't remember anything about how it looked like, but the series couldn't have been more than 3 years old.
That sounds like Zero no Tsukaima or The Familiar of Zero.

Visit its Wikipedia article to verify whether it matches your description.

It's one of my favorite, and it already has season 2.