Ep. 5: Sakon suspects an insider killed Takamura with a Nihinto, linking it to a murder 16 years prior.

5

Following the death of Takamura, who was killed using a Nihinto, Sakon turns his suspicion toward members of the current group. He theorizes that this recent homicide is connected to a separate murder that occurred at the same location 16 years earlier. The investigation focuses on identifying the killer within their midst, driven by the belief that the two incidents share a common origin or perpetrator. This connection to the past event adds a layer of complexity to the ongoing mystery, as Sakon attempts to determine if the current violence is a continuation of the older crime.