But thankfully, this handsome and clean face remained unchanged, even his name only changed from his given name to his surname followed by the character "xian".,Out of Japan's 220,000 police officers, only 500 are professional investigators. This comparison alone shows the difficulty of passing such an exam.,Of course, in terms of promotion speed, the incompetent Mouri Kogoro from the Gunma Prefectural Police in Detective Conan is most likely also part of the Career track.。