Weird Game: Saving Humanity from the Butcher

I remember listening to a novel on a book-listening software a long time ago. It seemed to be called True Killings at the time. I remember that I listened to at least dozens of them, or even more, but I didn't have a deep impression. I thought the content was good at the time, but then I was in a hurry. Now I want to listen to it again. I searched for related software and web searches, but couldn't find it. I wondered if it had been taken down. Finally, I found this new book here with only a few chapters. The beginning of the book seemed similar. I want to ask the author about the situation at that time.