Conan: I can hear the murderer's voice

Lin Xuan traveled through Conan and became Xiaolan's senior. He can't solve the case and can't remember the plot. After all, he was the same age as Conan when he watched Conan, and now his children are older than Conan!!! However, he can hear other people's voices. Just when Conan was thinking hard and looking for evidence, Lin Xuan had already solved the case by eavesdropping on the murderer. "There is only one truth..." After solving the case, Lin Xuan received a system reward. Megure: "Our police department needs a master like Lin Xuan." Maori Kogoro: "Why didn't I sleep after meeting Lin Xuan?" Conan: "Why is Lin Xuan always one step ahead of me?" Xiaolan: "Lin Xuan... Are you Shinichi?...