At ten o'clock in the evening on a rainy night, a male body was found beside the Kanda River. Kinoshita and I rushed to the scene. The deceased was about 30 years old, wearing a suit and ties. He had no external injuries and the cause of death was suffocation - but strangely, a small amount of river water was found in the trachea, but there was no drowning reaction in the lungs. What's even weirder is that there are two completely different business cards in the deceased's pocket: one is printed "Takahashi Yuto·Literary Editor", the other is printed "Takahashi Shunsuke·Freelance Writer". The phone numbers on the two business cards are different, but the addresses are the same. There was a slight conflicting expression on the deceased's face - as if he had seen something incredible before he died. Kato initially determined that the time of death was between 7 and 8 pm. I began a first-person narrative: "After twenty-three years as a police officer, I have learned one thing - seemingly contradictory clues often point to the simplest truth. But this time, I was wrong."
