Two people disappeared, engineers of the company Yamato Matsui and Koyama. The two worked overtime, and it is proven that they consumed alcohol together. According to the sushi restaurant employee who delivered the order around 9 p.m., the two were arguing loudly. Traces of blood were found at the scene, and it looks like a murder occurred. The Investigative Department begins an investigation… The 24nd work from the popular series "Keishicho Monogatari", which documents the activities of the First Investigation Division of the Capital Police Department.