Looking for a Mystery

"Ahem..." He spat out a small amount of blood from his mouth and said, "It turns out... You are more than just a detective. I didn't expect your city to be so deep... You have always been by my side, but I didn't notice..." "Haha - it's not too late to find out now." He agreed breathlessly. A dark figure stood up: "Your special friend is really unexpected. It's a bit interesting——" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.