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.
To learn the truth
about my mother's death 19 years ago.
لأعرف الحقيقة حول  
.وفاة أمي منذ 19 سنة
Ich möchte die Wahrheit hinter dem Tod
meiner Mutter vor 19 Jahren wissen.
Descubrir la verdad sobre la muerte
de mi madre hace 19 años.
Je veux savoir qui a tué ma mère
il y a 19 ans.
Sapere la verità sulla morte di mia madre, 
avvenuta 19 anni fa.
Saber a verdade sobre a morte
da minha mãe, há 19 anos atrás.