Actually, no. That is precisely the point.
Japanese Harry Potter books are famous for having furigana (small hiragana above difficult kanji). While you can't see furigana in an audio format, the vocabulary is surprisingly accessible. Magical terms like "Invisibility Cloak" ( Intangible Cloak - 透明マント / Toumei Manto) become easy to memorize because they are repeated constantly. harry potter japanese audiobook
Because you already know that Harry is looking for Platform 9¾, or that Snape is being dramatic in the Potions classroom, you don't get lost when you miss a word. You can let the Japanese wash over you, inferring meaning from the context you already have stored in your brain. Actually, no
