Flitwick is one of my favorite characters, and I'm always sorry that there's so little fic about him. So I was delighted to see this one just for the novelty of it; I didn't dare hope it was going to be this good.
But it is! It has so many of the things I love: effective imagery, strong writing, sex that develops the character, inventive magic. And it's hot.
I love that Filius loves teaching, I love that he's had enough practice to know that spunk isn't a good polishing agent, I love the kinky devil, period.