Ep. 12: Investigation into teenage suicides linked to Maki's past killing of his best friend
Aired on June 25, 2008

12
The narrative centers on a series of suicides committed by a group of teenage boys. As the investigation progresses, it is revealed that these recent deaths are connected to a previous incident. This earlier case involved Maki, who was forced to kill his best friend. The connection between the current tragedy and Maki's past actions becomes the focal point of the episode, highlighting the lingering impact of that traumatic event on the characters involved.
Episodes
- Ep. 8 · The team investigates a fatal body modification ceremony to find the killer
- Ep. 9 · Elderly man sacrifices life to save woman from serial killer leaving asterisk marks
- Ep. 10 · Prisoners awaiting execution are killed during blackouts in a facility.
- Ep. 11 · Aoki investigates a murder in a small village where the body retrieval is obstructed.
- Ep. 12 · Investigation into teenage suicides linked to Maki's past killing of his best friend
- Ep. 13 · The concluding segment of the client assignment narrative
- Ep. 14 · A designer shoemaker's murder mystery centers on the clue of red high-heeled shoes.
- Ep. 15 · Hostage demands Section Nine access to deceased prominent man's memories
- Ep. 16 · A director is killed by a Hannya-masked figure leaving only the phantom Sumire as a clue.