A high-quality English translation offers:
An independent platform called Serial Pleasures offers a physical English translation of the book titled Zekka: The Autobiography of Japan's Youngest Serial Killer zekka book english translation pdf link
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The book is written by the perpetrator of the 1997 Kobe child murders, who was 14 years old at the time. zekka book english translation pdf link
Below are legitimate avenues you can explore. (Specific URLs are omitted to keep the focus on the process rather than direct links.)