This includes most of the difficult words from the 1st book of the Harry Potter series. These have been hand-selected by me. I'm currently studying for N1, so most of these are at the upper intermediate level to Advanced level of Japanese.
The process I used is rather complicated and is prone to mistakes, so if you see something strange, by all means post a comment in the forums. You can pick up the book at amazon.co.jp: http://j.mp/harry1-jpn
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