Translate this text into English. At the center of the series are seven people who work in a small office in Kita-Shinagawa and resolve complex disputes. Kita-Shinagawa thrived as a post station, but today it is the city center with numerous high-rise buildings. This is a place where one can feel the people’s history, yet it also embodies modern society. Keywords: action, laughter, positivity. The detectives’ office initially investigates minor incidents, but this activity will grow into a major case.