The mistake Kiyonaga Matsumoto made twenty years ago was noted in the police archives. After chatting with Takasugi Toshihiko for a long time, he eventually established some unwritten rules at the police station.
In Conan's words, this was a painful lesson worth learning. The police needed to grow, and high school students like them did too.
Sonoko Suzuki did not understand Ran Mouri's concerns. She only felt that ever since Ran became a class representative, she seemed to have gradually grown distant from her, and they could no longer reach a consensus on many matters.
Chapter 53