Out of Japan's 220,000 police officers, only 500 are professional investigators. This comparison alone shows the difficulty of passing such an exam.,In this world, there is no tradition of ancestral rites. The protagonist's hometown in a parallel world is located in the town of Kamikawa, Kamikawa County, Hokkaido, where his family has been operating an onsen ryokan for generations.,Besides, I wonder if you've seen Monogatari Series, where Araragi Kun became a deputy police superintendent at 23 after graduating from university. His sister joined the police force as a patrol officer while still in high school.。