Out of Japan's 220,000 police officers, only 500 are professional investigators. This comparison alone shows the difficulty of passing such an exam.,From memory, I knew that the me in this world was far stronger. Since high school, I had set my goal and ultimately achieved it with one fell swoop. I even began to support this family.,(This is a chart from a post by the big boss of the Amuro Touya bar, about the promotion time of various types of police officers in Japan.)。