Detective Conan: Knifeman? I'm a good citizen of Beihua

Shirakawa Qiu traveled through time. He thought he was just in an ordinary world, and he was determined to make money. As a result, he met the legendary death elementary school student. Facing the difficult customer, Shirakawa Qiu couldn't help showing a gloomy and morbid smile, picked up the knife, and laughed like a villain: "You poor bug, I must kill you..." Eh? Eh? What is he doing? Why is he laughing so strangely! And why is this knife suddenly in my hand... Shirakawa Qiu, calm down! ! ! - Later, Shirakawa Qiu found out that he had traveled through time as a murderer in Conan's world, with a natural talent for crime proficiency, and could learn at a glance...