An engineer connected to the active construction site where a buried corpse is discovered. Provides technical or site-specific insights regarding excavation areas and worker movements, crucial to the landfill murder investigation.
Kume is the mother of the missing engineer Koyama, providing personal background during the investigation.
Kawahara worked alongside Koyama at the engineering company, providing context on their overtime habits.
Nagata leads the investigation into Koyama's disappearance, treating him as the central subject of inquiry.
Explore the full interactive character relationship map of Police Precinct: Missing Person