When Cho-san was a member of the First Investigation Division 19 years ago, he and Takei were assigned to investigate the murder of Daisuke’s mother, Sayuri. At the time, Cho-san entered the Kambe residence to investigate, and Shigemaru, the head of the Kambe family, surfaced as a suspect in the case. However, the investigative task force folded due to pressure from the top brass of the police, and Cho-san was demoted. Now back to the present, after the mysterious death of Imura, the woman who Daisuke brought into the police station, Kato and Cho-san’s suspicions deepen, so they decide to enter the Kambe residence.
In the end, with the material witness committing
suicide, the investigation will close.
سيتم إيقاف التحقيق على 
 .كل حال بما أن الشاهد على المادة قد انتحر
Unser Hauptverdächtiger hat Selbstmord
begangen und der Fall ist beendet.
Al final, con el testigo material muerto
la investigación se cerrará.
Le témoin crucial s’est suicidé,
l’enquête est terminée…
Con il sospettato principale
che si è suicidato, l'indagine verrà chiusa.
Com o testemunho material cometendo suicídio,
a investigação será encerrada.