Cang Xiu is a vampire who doesn't understand elegance. He opened a detective agency to pass the time, and his business is pretty good with his skills.
I originally wanted to find someone to fight with, but I got the most high-tech humanoid fighting machine in the three wars.
In a series of strange and curious cases, Cang Xiu found that he began to have unexpected feelings for this machine that looked the same as a human man...