Harry runs away to join the circus? Fabulous. I really enjoyed the presence of Trelawney, both times; great to see good use out of a minor character. Travel between alternative universes is something I really like, and through a mirror, even; classic, with the added interest using Erised to give it more meaning. Definitely cool :). Fun to see Harry cramming for potions, too, and the sex was mm, very very nice indeed. Love the banter. Excellent banter.