Keiji Monogatari 3: Shiosai no Uta (1984)

Keiji Monogatari 3: Shiosai no Uta 1984 / 刑事物語3 潮騒の詩 1984 / Karate Cop III: Song of the Sea , Karate Cop 3

Detective Katayama of Goto Chuo Police Station has many problems and spends his days as a detective in name only. One day, Katayama is ordered to act as a guide for detectives from the Metropolitan Police Department's First Investigative Division who have come to investigate a murder case. By chance, he ends up living and working at a guesthouse run by the family of the fugitive, Nishina, who is missing after being accused of killing a gang boss. (Source: Japanese = Filmarks || Translation = TMDb, XuongPhim)