Japanese Edition of Codebreaking: A Practical Guide by Elonka Dunin and Klaus Schmeh

Codebreaking: A Practical Guide is now available in Japanese! The book is by Elonka Dunin and Klaus Schmeh and was first published in UK in 2020 (as I reported before). In US, a new expanded edition was published in September 2023 (announced here). The translation is based on the 2020 version, with additional appendices for reprint: Appendix D for the solution of the famous Zodiac killer cryptogram Z340, released right after the first publication plus Appendix E showing the Morse table. According to the translator's preface, the translation project started soon after the initial publication.

Although I'm mentioned as one of contributors to the original English version (p.16 of the translation), I believe the following is not too partial.

Use of the polite style in Japanese (cf. Hiragana Times), as well as presenting personal names in the original roman alphabet, is, I believe, the style commonly adopted in textbooks/manuals in the field of computing and cybersecurity where the expertise of the translator belongs.

The translator, who accepted the offer of this project after seeing the high rating of the original edition abroad and endorsements by experts, got absorbed in classical cryptography through reading the book. The numerous translator's notes inserted between paragraphs attest to the zeal to help beginners understand the content. Sometimes, the translator's note runs half of a page (e.g., p.229). Given the evident zeal, it could have been better but for the occasional typos and a few relevant errors.
The translator's notes are more than just a guide for beginners. I myself found useful the explanation of the very first steps of CrypTool 2 on p.7-8! At times, additional information is given, like the solution of the Silk Dress cryptogram in 2024 (p.153). I found interesting the episode of a Lorenz machine being sold on eBay for 9.5 pounds in 2016! (The news received media coverage at the time: NPR, BBC, The Guardian).

With so many topics about paper-and-pencil ciphers with many worked-out examples, numbering the sections adopted in the Japanese verion (including in the running head) is convenient for referencing and navigating. I never thought such a voluminous work (nearly 500 pages) can be published in Japanese at such an affordable price (3,480 yen before tax).
I enjoyed re-reading this book in Japanese, with occasional reference to the original in English.
Congratulations to the authors on the publication!