mein buch! it is not fiction but nevertheless I can recommend it
https://onemorelibrary.com/index.php/en/books/social-sciences/book/political-science-183/mein-kampf-193
i recently finished Karl Ove Knausgaard's 6 volume series "My Struggle". In the final volume, he goes into some details about Hitler's book by the same name. It was pretty interesting.