Armored Police Metal Jack

Top Secret (1x7)

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On his first day off in a long time, Ken breaks his promise with Sayuri and secretly visits his father's grave. There, Ken remembers an incident from 10 years ago. His father was shot dead by a vendetta by a criminal he had arrested. For Ken, that was the starting point of his career as a police officer. But then he finds out that the criminal has escaped from prison!