I'm friends with the author in the 'real world' and have read the whole fic. She's been slaving after this story for a long, long time, around the same time Klaine became a real thing. She tried to write Harryx Kurt
, but liked Klaine so much that she went with it and I am so glad she did.
The characters are very canon personality wise, however they are better versions of themselves in my opinion. There's 15 chapters at the moment and her word count is over 130,000 already, and I know she has 170,000 words on Word that need to be edit. Plus she always add new things to each chapter that made even more interesting.
Also, The Big Purple Book, her side project is pretty amazing too. She has put so much work into this world that she literally can create other worlds out of it. Her second chapter there shows how much depth there is, because changing one little things creates a whole new fic in the same universe.
Either way, despite the uncommon pairing, is totally worth reading.