The Killer Archives is a place that collects information and stories about all the most skilled killers in the world. This is a website that is only circulated among killers.
When a killer completes his tenth mission, the URL of the archive will be sent to him, no matter where he is.
When a killer's level reaches a certain level, an invitation letter from the archives will follow, asking him to tell his story, and then make it public in the museum as it is - whether he is willing or not, and whether the story is true or not.
As a killer, letting others know about yourself, especially your peers, may be life-threatening. I am afraid that few people are willing to proofread the authenticity of archives materials, but few people refuse or tell lies when faced with access by archives personnel. In addition to the fact that the archives has a group of top killers who will kill the person without their body if they are found to be against the wishes of the archives, there are other reasons.
The guilt of killing people, the satisfaction of doing something that is difficult for ordinary people to do... Few people are really willing to choose to bear it themselves. Although he is a killer, as long as he is a human being, he needs to talk. Over time, revealing his true feelings to the archives has become an unwritten rule among killers. So the Archives also smells like a psychological adjustment expert.
This is also the meaning of the existence of the Killer Archives.