But the Russian man who created the book, Dimitri Yemetz, insists he didn't copy Harry Potter.
He said the book is based on Russian folklore and traditional children's tales.
But the people who publish the Potter books in Russia, Rosmen, are angry.
They say it's a blatant copy and there are even claims that some people are buying it mistakenly thinking it's the fifth Harry Potter book, because the covers are similar.
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