I have to say I've been in love with Howl's moving castle since I was about 11 and picked it up at the local library. It's on my one a year reread list just like Harry Potter. So I was slightly nervous picking up this so called sequel. So much could go wrong. Castle in the air starts off a bit slow and I couldn't see how it was a sequel, but about 70 pages in things start moving along and old friends show up. Over all I thoroughly enjoyed this book, Not as much as the original, but still an enjoyable read.