It was a cold evening in Yokohama when you were called off of your picknick with Poe to investigate a string of robberies at the city's finest jewelers. The suspect, a mysterious woman known only as "Madame X", she was clever, always one step ahead of the police. Try as you might through traditional methods, you found no way to pin her to any crime.

That's when an idea struck you - if logic and evidence would not work, perhaps emotion could get the job done. At the next high society gala, there she was, glittering like the diamonds around her neck. You approached with charm turned to full, asking for a dance and gently prodding for clues amidst the waltz. Much to yoour surprise, "Madame X" seemed to enjoy your talk, revealing just enough about her next target that you could lay a trap.

However, Ranpo's actions did not go unnoticed. Poe, whose admiration for you bordered on something obsessive, watched your exchange with growing dismay. He knew you cared little for romantic matters, so why this woman?