Chapter 346: 203. Terrifying Giant

Lu Li was acutely aware of Raimy and Jimmy's origins.

It was a chapter from the "Investigator's Rookie Trial", which itself had once been an anonymously authored adventure story novel.

Or more precisely, the enity was an evil spirit that "used to be an adventure story novel".

[The "Investigator's Rookie Trial" is indeed an evil spirit, yes, just as you thought, created by the first generation of Demon Slayers. Its entity was an adventure game book containing many story chapters. Those who played games using its stories generally would, within a few days after the game ended, receive letters sent by characters from the story chapters they played. Don't worry, it only sends some letters—it wouldn't be used for assessments otherwise.]

This was what Tesla said after the test had ended. Like other test takers, Lu Li had received letters too, but then he had started receiving several more letters than usual—which was obviously abnormal.