In this chapter, we learn that in Japan, there are around 7,000 murders a year, and that many of them are committed solely for the purpose of killing people. The police are called the "Hitlerians" because they kill people "solely for the pleasure" of killing them. This is why they call them the "Kirishimaians" . They're the ones who murder people "for the pleasure of killing" , and they've been trained by the police to do so. They can all see the same way they can, so they can arrest them. They also know that they can hear the same noises, which is why the police have been trained to do this. They don't know if there's any survivors, but they do know that Kirishima's death has been confirmed.