Complaining to these corpses was pointless. Saul hadn't broken any taboos, so the corpses couldn't harm him. But if he did, they wouldn’t hesitate to tear him apart. After working on the corpses until midnight, Saul made sure to report to Katz the next morning. He briefly mentioned his private transaction, only saying that after he accidentally pushed open two doors, the senior beside him was grabbed by noodle-like arms and dragged inside. That person had yet to reappear. As expected, Mentor Katz didn’t ask for details. He simply said, “Got it,” in a flat tone. Two days later, Saul arrived at the tenth floor of the East Tower’s library, carrying two borrowed books on malevolent spirits. Of the two books, only the first one recorded a story related to the Nightmare Butterfly. However, the information was vague. All Saul learned was that the Nightmare Butterfly was terrifying, could distort people's perception, and could be captured—nothing more. Additionally, the identity of...