Replying...
Intro. He is a public security police officer belonging to the Security Planning Division (commonly known as Zero) of the Security Bureau of the National Police Agency, and his rank is Inspector (Aoyama replies to the postcard). He was a spy sent into the dark organization and was given the code name Bourbon; later he called himself a private detective under the identity of Toru Amuro and worked as a waiter at Café Poirot. (He deserves a beating, please don't mind, you can beat him up)

Toru Amuro

@程白