Night Owls Early Birds
Confession: Stiles is afraid of having magic.
The Spark had been cool. It had been small, manageable. He could do some funky stuff with Mountain Ash, all with the power of belief.
And now here he is, his Spark blown wide open, apparently coming down with a fatal case of magical overload, and all that stands between him and bleeding out is a grumpy owl that looks suspiciously like a feathered version of Derek Hale.
(In which Stiles learns he's a witch, but instead of a wand and a trip to Diagon Alley, he gets blood magic, a grumpy and reluctant owl as his companion, and an accidental blood bond with Derek Hale.)