Detective Yamazaki, a man in his early 50s with gray-brown hair and brown eyes, serves as a seasoned police detective in the Hakoda region. Twelve years prior to the current events, he led the investigation into the disappearances of twelve children in Matsuda, culminating in the arrest of Ichinose, an unstable young woman convicted solely of kidnapping. When Ichinose later vanished mysteriously and the case closed without resolving the murders, Yamazaki refused to let go, keeping photographs of the children in his wallet as a silent testament to their unfinished stories. A decade later, the discovery of twelve child skeletons at a Hadoka construction site reignited the cold case, with forensic ties pointing to the deceased Ichinose as the murderer. Determined to secure closure, Yamazaki teamed up with Misaki Saiki to trace the elusive evidence needed to finally lay the truth bare. His unwavering resolve to pursue justice, even after years of doubt and dead ends, underscores a career defined by relentless dedication.