Need to be read with extreme cautiousness. I finished it within a day but have to pause multiple times due to the horrifying nature of the crimes. I watched cute cat videos on my break sessions. This book is just like most if not all Japanese nonfiction books, it presents details to you but only the details. The author only described the ‘facts’ but never really questioned the obvious missing or contradicting informations. You can say it’s cautious, but more often than not it made me feel frustrated upon finishing reading.