But luckily, today's job was pretty easy. The knife was sharp and easily pierced the other person's neck, tearing through the neck muscles and reaching the windpipe. With a light flick, I cut open the entire airway...,As he was pondering, suddenly, he heard the sound of “咚~咚~咚~” knocking on the door.,“Oh, I forgot to introduce myself. My name is Sherlock Holmes, a detective.”。